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Assigning event handlers in JavaScript using DOM object property
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/01/assigning-event-handlers-in-javascript.html In JavaScript there are several ways to associate an event handler to the event. In Part 36, we discussed, associating event handler methods to events using the attributes of HTML tags. In this video we will discuss using DOM object property to assign event handlers to events. First let us understand, what is DOM DOM stands for Document Object Model. When a browser loads a web page, the browser creates a Document Object Model of that page. The HTML DOM is created as a tree of Objects. Example : [html] [head] [title]My Page Title[/title] [/head] [body] [script type="text/javascript"] [/script] [div] [h1]This is browser DOM[/h1] [/div] [/body] [/html] JavaScript can be used to access and modify these DOM objects and their properties. For example, you can add, modify and remove HTML elements and their attributes. Along the same lines, you can use DOM object properties to assign event handlers to events. We will discuss the DOM object in detail in a later video session. We will continue with the same examples that we worked with in Part 36. Notice that in this case, we are assigning event handlers using the DOM object properties (onmouseover & onmouseout) instead of using the attributes of the HTML tag. We are using this keyword to reference the current HTML element. In this example "this" references the button control. [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] document.getElementById("btn").onmouseover = changeColorOnMouseOver; document.getElementById("btn").onmouseout = changeColorOnMouseOut; function changeColorOnMouseOver() { this.style.background = 'red'; this.style.color = 'yellow'; } function changeColorOnMouseOut() { this.style.background = 'black'; this.style.color = 'white'; } [/script] The following example is same as the above. In this case we are assigning an anonymous function to onmouseover & onmouseout properties. [input type="button" value="Click me" id="btn" /] [script type="text/javascript"] document.getElementById("btn").onmouseover = function () { this.style.background = 'red'; this.style.color = 'yellow'; } document.getElementById("btn").onmouseout = function () { this.style.background = 'black'; this.style.color = 'white'; } [/script] If an event handler is assigned using both, i.e an HTML attribute and DOM object property, the handler that is assigned using the DOM object property overwrites the one assigned using HTML attribute. Here is an example. [input type="button" value="Click me" id="btn" onclick="clickHandler1()"/] [script type="text/javascript"] document.getElementById("btn").onclick = clickHandler2; function clickHandler1() { alert("Handler set using HTML attribute"); } function clickHandler2() { alert("Handler set using DOM object property"); } [/script] Using this approach you can only assign one event handler method to a given event. The handler that is assigned last wins. In the following example, Handler2() is assigned after Handler1. So Handler2() owerites Handler1(). [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] document.getElementById("btn").onclick = clickHandler1; document.getElementById("btn").onclick = clickHandler2; function clickHandler1() { alert("Handler 1"); } function clickHandler2() { alert("Handler 2"); } [/script]
Views: 52597 kudvenkat
Events in JavaScript
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/01/events-in-javascript.html What is an event An event is a signal from the browser that something has happened. For example, 1. When a user clicks on an HTML element, click event occurs 2. When a user moves the mouse over an HTML element, mouseover event occurs When events occur, we can execute JavaScript code or functions in response to those events. To do this we need to associate JavaScript code or functions to the events. The function that executes in response to an event is called event handler. In JavaScript, there are several ways to associate an event handler to the event 1. Using the attributes of an HTML tag 2. Using DOM object property 3. Using special methods In this video we will discuss associating event handler methods to events using the attributes of HTML tags. In the following example, the code to execute in response to onmouseover & onmouseout events is set directly in the HTML markup. The keyword "this" references the current element. In this example "this" references the button control. [input type="button" value="Click me" id="btn" onmouseover="this.style.background= 'red'; this.style.color = 'yellow'" onmouseout="this.style.background= 'black'; this.style.color = 'white'" /] The above example, can be rewritten as shown below. In this case the code to execute in response to the event is placed inside a function and then the function is associated with the event. [input type="button" value="Click me" id="btn" onmouseover="changeColorOnMouseOver()" onmouseout="changeColorOnMouseOut()" /] [script type="text/javascript"] function changeColorOnMouseOver() { var control = document.getElementById("btn"); control.style.background = 'red'; control.style.color = 'yellow'; } function changeColorOnMouseOut() { var control = document.getElementById("btn"); control.style.background = 'black'; control.style.color = 'white'; } [/script] Events are very useful in real-world applications. For example they can be used to 1. Display confirmation dialog box on submitting a form 2. Form data validation and many more How to show confirmation dialog in JavaScript [input type="submit" value="Submit" id="btn" onclick="return confirmSubmit()" /] [script type="text/javascript"] function confirmSubmit() { if (confirm("Are you sure you want to submit")) { alert("You selected OK"); return true; } else { return false; confirm("You selected cancel"); } } [/script] JavaScript form validation example : In this example, both First Name and Last Name fields are required fields. When you type the first character in any of the textbox, the background colour is automatically changed to green. If you delete all the characters you typed or if you leave the textbox without entering any characters the background colour changes to red indicating the field is required. We made this possible using onkeyup and onblur events. onkeyup occurs when the user releases a key. onblur occurs when an element loses focus. [table] [tr] [td] First Name [/td] [td] [input type="text" id="txtFirstName" onkeyup="validateRequiredField('txtFirstName')" onblur="validateRequiredField('txtFirstName')"/] [/td] [/tr] [tr] [td] Last Name [/td] [td] [input type="text" id="txtLastName" onkeyup="validateRequiredField('txtLastName')" onblur="validateRequiredField('txtLastName')"/] [/td] [/tr] [/table] [script type="text/javascript"] function validateRequiredField(controlId) { var control = document.getElementById(controlId); control.style.color = 'white'; if (control.value == "") { control.style.background = 'red'; } else { control.style.background = 'green'; } } [/script]
Views: 71503 kudvenkat
Change background image using Javascript with Html Button
 
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change the image of body using html button by applying javascript function.. onclick method is used on button.
Views: 8426 owais ali
how to add background image in html
 
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Hey guys, my book CSS Visual Dictionary – https://www.amazon.com/dp/1983065633 Explains all of this with visual 150+ visual diagrams. (For more detail and "Look Inside" on Amazon go there) How to add background image to your HTML page? In this tutorial I'll show you an example source code that changes your background image to anything you want. Just type in a URL address into inline or external CSS like: <body style ="background: url('here.jpg')"> The single quotes around 'here.jpg' are not required, and if your style is already wrapped in double quotes, you cannot use double quotes around "here.jpg" or it will create an error. Here are a few keyword phrases that might help get this tutorial found on YouTube search. Thanks for watching! html background image tutorial html background image full screen html background image no repeat html background image no size html background image tutorial using notepad html background image tutorial resize html how to add background image to html body inserting background image in html how to fit background image in html adding background image in html
Views: 159204 JavaScript Teacher
Javascript Dom manipulation with HTML background changing color
 
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Learn more about javascript here: http://amzn.to/1S5QhoJ Skip to 3:03 starts This is a tutorial about html dom manipulation with javascript. It's quick tutorial about how to create an annoying flashing background with javascript and html. This will help people kind of see what jquery is doing. You select a dom object then you manipulate it.
Views: 837 Retro Gamer
CSS Tutorial For Beginners 46 - Multiple Backgrounds
 
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Yooo ninjas. So in this CSS tutorial, I'll be imparting some extra background property wisdom. More specifically, I'll be teaching you about the awesomeness of multiple backgrounds! First of all we'll talk about how to add in multiple backgrounds to the background-image property. Then we'll use our ninja powers to tweak the background-repeat, background-size & background position properties so that they look nice on a web page. Peace out, have fun & keep coding :). SUBSCRIBE TO CHANNEL - https://www.youtube.com/channel/UCW5YeuERMmlnqo4oq8vwUpg?sub_confirmation=1 ========== CSS for Beginners Playlist ========== https://www.youtube.com/playlist?list=PL4cUxeGkcC9gQeDH6xYhmO-db2mhoTSrT ========== HTML Basics Course ========== https://www.youtube.com/playlist?list=PL4cUxeGkcC9ibZ2TSBaGGNrgh4ZgYE6Cc ========== The Net Ninja ============ For more front-end development tutorials & to black-belt your coding skills, head over to - https://www.youtube.com/channel/UCW5YeuERMmlnqo4oq8vwUpg or http://thenetninja.co.uk ========== Social Links ========== Twitter - @TheNetNinja - https://twitter.com/thenetninjauk
Views: 23708 The Net Ninja
How to make Background Color Change using HTML,CSS and JAVASCRIPT
 
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This tutorial is helpful for making Background Color Change using HTML,CSS and JAVASCRIPT...
Views: 9862 Helping Words
Lesson 8: Borders, Backgrounds, and Floating Divs - HTML Course
 
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In this lesson, we'll discuss some more advanced CSS styles such as using borders around div tags, background colors and images for HTML elements, and floating divs (also called "floats") for text positioning.
Views: 10377 Universal Class
JavaScript Game Development Tutorial - #9  Set Button & Background Image & style.css
 
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JavaScript Game Development Tutorial - #9 Set Button & Background Image & style.css Download Sound & Image: https://codingwithsara.com/javascript-canvas-game-tutorial/
Views: 526 codingwithsara
javascript tutorial - dynamically change  background color using rgb color in javascript - bangla
 
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In this video, I have shown how can we change background color dynamically using rgb color in pure javascript. Source code and text tutorial will be available in following link https://github.com/polodev/rgb_dynamic_color_in_javascript_yt_bangla This is a funny little project, which will help you to practice some javascript with fun. Things I have covered in this lesson Math object Math object is a collections of properties and method to perform mathematical calculation. // for getting pi value Math.PI // for getting ceil value Math.ceil(2.33); //for getting floor value Math.floor(2.33); //for getting round value Math.round(2.33); Math.round(2.63); //for getting random number between 0 - 1; Math.random() //for getting random number between 0 - 5; Math.random() * 5 //for getting random integer number between 0 - 5; Math.floor(Math.random() * 5) //for getting random integer number between 0 - 5 using pareInt function // I mean instead of Math.floor() method we can use parseInt function parseInt(Math.random() * 5) style in js using element.style object we can style our html document in javascript. In css, we are using background-color as css property. But in js hyphen (-) treated as arithmetic operator. So instead of background-color in js we have to use cameCase version 'backgroundColor'. Same goes to similar css properties like fontFamily body.style.backgroundColor = 'red'; body.style.color = 'white'; string interpolation using backtick var name = 'sumon'; var text = `my name is ${name}`; addEventListener using addEventListener we can attach any event to a element button.addEventListener('click', function () { // whatever you want to execute on click event }); Here first parameter is event name, second parameter is a function setTimeout and setInterval function in js using setTimeout function we can delayed any execution in certain time, using setInterval method we can do certain work certain time later again and again setTimeout(function () { console.log('helo world') }, 10000); setInterval(function () { console.log(new Date()) }, 3000); How to make a dynamic colors using css rgb colors color using rgb(0, 255, 255) value we require value for red, green, blue. Min value is 0 and max value is 255. So we have to generate 3 random value in between 0 and 255. Which can be done using Math.random() and parseInt() method Math.floor( Math.random() * 255); Once we have 3 random numbers, using string interpolation we will set rgb value var number_one = Math.floor( Math.random() * 255); var number_two = Math.floor( Math.random() * 255); var number_three = Math.floor( Math.random() * 255); body.style.backgroundColor = `rgb(${number_one}, ${number_two}, ${number_three})` Here is the full code for sneak peek. We have added setTimeout and setInterval functionality to make it little more fun var body = document.body; var button = document.querySelector('button') function color_change () { var number_one = Math.floor( Math.random() * 255); var number_two = Math.floor( Math.random() * 255); var number_three = Math.floor( Math.random() * 255); body.style.backgroundColor = `rgb(${number_one}, ${number_two}, ${number_three})` } color_change(); body.style.color = 'white'; button.addEventListener('click', color_change); var auto_color = setInterval(color_change, 500); setTimeout(function () { clearInterval(auto_color); }, 10000); My name is shibu deb polo Thanks Please subscribe to my channel https://www.youtube.com/c/polodev10 Happy coding!
Views: 1114 shibu deb polo
Partial Print Document JavaScript Tutorial HTML div Content
 
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Lesson Code: http://www.developphp.com/video/JavaScript/Partial-Print-Document-Tutorial-HTML-div-Content Learn to allow users to print specific parts of your documents instead of printing the entire web page. We will apply print buttons near each printable portion of the document.
Views: 85922 Adam Khoury
Styling for Print Using CSS
 
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A demonstration of how to use a CSS media query and print-specific styles to make a web-page more printer friendly.
Views: 12494 Neal Legler
Full Screen Background Image using CSS
 
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Video explains how to use background image in full width using CSS and HTML5.
Views: 146712 Helpfolder
javascript tutorial - Background color change dynamically using pure javascript - bangla
 
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In this video I have shown how can we change background color dynamically using javascript. Source code and tutorial will be available from following link https://github.com/polodev/dynamic_color_in_javascript_yt_bangla Dynamic Background color using pure javascript This is a funny little project, which will help you to practice some javascript with fun. Things I have covered in this lesson Math object Math object is a collections of properties and method to perform mathematical calculation. // for getting pi value Math.PI // for getting ceil value Math.ceil(2.33); //for getting floor value Math.floor(2.33); //for getting round value Math.round(2.33); Math.round(2.63); //for getting random number between 0 - 1; Math.random() //for getting random number between 0 - 5; Math.random() * 5 //for getting random integer number between 0 - 5; Math.floor(Math.random() * 5) //for getting random integer number between 0 - 5 using pareInt function // I mean instead of Math.floor() method we can use parseInt function parseInt(Math.random() * 5) style in js using element.style object we can style our html document in javascript. In css, we are using background-color as css property. But in js hyphen (-) treated as arithmetic operator. So instead of background-color we will use cameCase version 'backgroundColor'. Same goes to similar css properties like fontFamily body.style.backgroundColor = colors[ parseInt(Math.random() * colors.length) ]; body.style.color = 'white'; addEventListener using addEventListener we can attach any event to a element button.addEventListener('click', function () { // whatever you want to execute on click event }); Here first parameter is event name, second parameter is a function How to make a dynamic colors we will make array of colors and make background color from colors array using js. We will select random color from colors array using Math.random() and parseInt() method. Here is the full code var body = document.body; var button = document.querySelector('button'); var colors = ['teal', 'salmon', 'tomato', 'blue', 'green', 'maroon', 'dodgerblue']; function color_change() { body.style.backgroundColor = colors[ parseInt(Math.random() * colors.length) ]; } color_change(); button.addEventListener('click', color_change); body.style.color = 'white'; My name is shibu deb polo Thanks Please subscribe to my channel https://www.youtube.com/c/polodev10 Happy coding!
Views: 694 shibu deb polo
Change Style Sheet Using Javascript Tutorial CSS Swap Stylesheet
 
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Lesson Code: http://www.developphp.com/video/JavaScript/Change-Style-Sheet-Using-Tutorial-CSS-Swap-Stylesheet Learn to change the entire style of your web page with a click using JavaScript that is targeting the href attribute of your familiar link element using the setAttribute method of JavaScript. DEMO: http://www.adamkhoury.com/demo/js_swap_css_stylesheet/
Views: 44613 Adam Khoury
HTML & CSS for Beginners Part 13: Background Images
 
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Ever wondered how to get text on top of an image on your website? Well that's exactly what I look at in this video! I also dive in to some of the ways we can control our background images with CSS, taking a look at background-repeat, background-position, and background-size. Subtle Patterns - http://subtlepatterns.com ---- Half Bit by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/?keywords=%22half+bit%22 Artist: http://incompetech.com/
Views: 41069 Kevin Powell
jQuery Element Selector
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/03/jquery-element-selector.html In this video we will discuss jQuery Element Selector, i.e selecting elements by tag name. To select the elements by tag name use jQuery Element Selector Syntax : $(element) $('td') // Selects all td elements $('div a') // Select all anchor elements that are descendants of div element $('div, span, a') // Selects all div, span and anchor elements Alerts the total count of td elements on the page [script type="text/javascript"] $(document).ready(function () { alert($('td').length); }); [/script] Selects all the tr elements on the page and changes their background colour to red [script type="text/javascript"] $(document).ready(function () { $('tr').css('background-Color', 'red'); }); [/script] Alerts the HTML content of the table [script type="text/javascript"] $(document).ready(function () { alert($('table').html()); }); [/script] Alerts the HTML content of each table row [script type="text/javascript"] $(document).ready(function () { $('table tr').each(function () { alert($(this).html()); }); }); [/script] Select and changes the background colour of all the div, span and anchor elements [script type="text/javascript"] $(document).ready(function () { $('div, span, a').css('background-Color', 'yellow'); }); [/script] Select all anchor elements that are descendants of div element [html] [head] [title][/title] [script src="jquery-1.11.2.js"][/script] [script type="text/javascript"] $(document).ready(function () { $('div a').css('background-Color', 'yellow'); }); [/script] [/head] [body] [div] [a href="http://pragimtech.com"]PragimTech[/a] [/div] [br /] [a href="http://microsoft.com"]Microsoft[/a] [/body] [/html] Changes the background color of even rows to gray and odd rows to yellow in both the tables. [script type="text/javascript"] $(document).ready(function () { $('tr:even').css('background-Color', 'gray'); $('tr:odd').css('background-Color', 'yellow'); }); [/script] To change the background color of even rows to gray and odd rows to yellow just for one of the table, use #id selector along with element selector. [script type="text/javascript"] $(document).ready(function () { $('#table1 tr:even').css('background-Color', 'gray'); $('#table1 tr:odd').css('background-Color', 'yellow'); }); [/script]
Views: 141917 kudvenkat
How to Create Web Pages Using HTML : How to Add a Background Image to a Web Page
 
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To add a background image to a Web page, add a background attribute to the body tag with the location or URL of the image, either absolute or relative. Add a background image when creating a Web site with tips from a software developer in this free video on Web design and the Internet. Expert: Luis Estrada Bio: Luis Estrada has a Bachelor's degree in Computer Science. He specializes in developing web sites and web applications. Estrada has been designing and creating websites for more than 8 years. Filmmaker: Luis Estrada
Views: 400402 eHow
JavaScript PHP HTML - Background Colour changing
 
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The video shows the code for changing background color based on seconds using JavaScript, PHP and HTML. For Source Code - http://www.professionalcipher.com/2018/03/web-technology-assignments-pune-university.html Follow me on Facebook: https://goo.gl/25zwP6 Twitter:https://goo.gl/xlqdaF Google+ :https://goo.gl/TEoRLN YouTube:https://goo.gl/BtXDph My Blog of YouTube:https://goo.gl/0Lvh0w Thank You..Leave a Like & Subscribe
Views: 122 StudyGyaan
How to use particles.js - particles.js as background - background particles animation jquery
 
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My Amazon Shop link : https://www.amazon.in/shop/onlinetutorials ------------------------ Please LIKE our NEW Facebook page for daily updates... https://www.facebook.com/Online-Tutorial-Html-Css-JQuery-Photoshop-1807958766120070/
Views: 91263 Online Tutorials
CSS Tutorial 8 - Styling Backgrounds
 
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In this tutorial, we talk about how to style webpage backgrounds to a specific color or image using CSS! We also talk about how to change the way a background repeats on a webpage, as well as how to position a background in different locations! If you have any questions, comments, or suggestions, please don't hesitate to ask! Thank you for watching! TechnicalCafe Blog: http://TechnicalCafe.com TechnicalCafe Twitter: http://Twitter.com/TechnicalCafe Jamie's Twitter: http://Twitter.com/Jamiemcg
Views: 2101 TechnicalCafe
Using JavaScripts tO Change FacebOok background Color [ 100% works ] [2012]
 
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users should Get mozilla firefox before using scripts ! BLUEBAR SIDE NAME COLOR: javascript:void(document.getElementById('blueBar').style.background='red') within the brackets you can write any color for example : javascript:void(document.getElementById('blueBar').style.background='GREEN') INFOBAR SIDE COLOR: javascript:void(document.getElementById('content'). style.background='orange')
Views: 1005 Junglee94
CSS Background Image Tutorial: Lecture 37, Web Design for Beginners Course
 
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This video is part of my HTML & CSS video course: https://www.udemy.com/web-design-for-beginners-real-world-coding-in-html-css/?couponCode=YOUTUBEDEAL Learn how to add background images with CSS (repeat or tile, position, size, and multiple images assigned to a single element). If you want a full screen background try applying these background image techniques to the "html" or "body" element. If you want a "fixed" or "sticky" background image try adding the following declaration to the relevant CSS rule: "background-attachment: fixed;" Sign up for my newsletter to receive periodic webDev tips, tricks, resources and coupons. Join the list at http://learnwebcode.com/ Follow me on Twitter for updates and cat pics: https://twitter.com/learnwebcode
Views: 175330 LearnWebCode
Background color selection list using a bit of javascript..
 
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Background color change using a select list! in html, with some javascript..
Views: 23 vyas_ codes
Javascript + jQuery DOM: manipulating classes
 
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Manipulating classes on HTML elements, following a best practice naming convention. Code & tutorials: http://learn-the-web.algonquindesign.ca/topics/dom/
Views: 828 Thomas Bradley
Where should the script tag be placed in html
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/11/where-should-script-tag-be-placed-in.html In this video we will discuss, where should the script tag be placed in the html. Should it be placed in the body or head section of the page. In general the script tag can be placed either in the head or body section. Let's look at a few examples : Example 1 : Script tag in the head section [html] [head] [script type="text/javascript"] alert("Welcome to JavaScript Tutorial"); [/script] [/head] [body] [form id="form1" runat="server"] [/form] [/body] [/html] Example 2 : Script tag in the body section [html] [head] [/head] [body] [form id="form1" runat="server"] [/form] [script type="text/javascript"] alert("Welcome to JavaScript Tutorial"); [/script] [/body] [/html] In Example 1 we placed the script tag in the head section and in Example 2, we placed it in body section. In both the cases JavaScript works as expected. Example 3 : Sets the background color of the TextBox to red. [html] [head] [/head] [body] [form id="form1" runat="server"] [asp:TextBox ID="TextBox1" runat="server"][/asp:TextBox] [/form] [script type="text/javascript"] document.getElementById("TextBox1").style.backgroundColor = "red"; [/script] [/body] [/html] Example 4 : This is same as Example 3, except we moved the script tag to the head section. In this case the script will not work as expected. Depending on the browser you are using you get one of the following JavaScript error. Firefox - TypeError: document.getElementById(...) is null Chrome - Uncaught TypeError: Cannot read property 'style' of null IE - Unable to get property 'style' of undefined or null reference To see these JavaScript errors press F12 which launches developer tools. F12 works for all the 3 browsers. [html] [head] [script type="text/javascript"] document.getElementById("TextBox1").style.backgroundColor = "red"; [/script] [/head] [body] [form id="form1" runat="server"] [asp:TextBox ID="TextBox1" runat="server"][/asp:TextBox] [/form] [/body] [/html] Why did the JavaScript did not work in this case JavaScript code is present before the textbox control. By the time the JavaScript code is executed, the textbox is still not loaded into browser DOM (Document Object Model). This is the reason JavaScript can't find the textbox and throws a NULL reference error. In Part 6, we discussed that, in general it is a good practice to store JavaScript in an external .js file. So, if the JavaScript is present in an external file and if you are referencing it on a page using [script] element, where should such [script] element be placed. To answer this question, first let's understand what happens when a browser starts loading a web page. 1. The browser starts parsing the HTML 2. When the parser encounters a [script] tag that references an external JavaScript file. The parser stops parsing the HTML and the browser makes a request to download the script file. Until the download is complete, the parser is blocked from parsing the rest of the HTML on the page. 3. When the download is complete, that's when the parser will resume to parse the rest of the HTML. This means the page loading is stopped until all the scripts are loaded which affects user experience. In general, the suggested good practice is to place the [script] tag just before the closing [body] tag, so it doesn't block the HTML parser. However, modern browsers support async and defer attributes on scripts. These attributes tell the browser it's safe to continue parsing while the scripts are being downloaded. But even with these attributes, from a performance standpoint it is still better to place [script] tag just before closing [body] tag. According to HTTP/1.1 specification browsers download no more than two components in parallel. So, if the page has several images to download and if you place [script] tags at the top of the page, the script files start to download first which blocks the images download which adds to the total page load time.
Views: 99807 kudvenkat
background color property in CSS (Hindi)
 
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Topics: background color property Make sure you have basic knowledge of HTML before watching Cascading Style Sheet (CSS) Tutorials. You can find out our HTML Complete Video tutorials : http://goo.gl/O254f9 Feel free to share this video: CSS Complete Video Tutorial Playlist: https://goo.gl/1QNdiB Check Out Our Other Playlists: https://www.youtube.com/user/GeekyShow1/playlists SUBSCRIBE to Learn Programming Language ! http://goo.gl/glkZMr Learn more about subject: http://www.geekyshows.com/ __________________________________________________________ If you found this video valuable, give it a like. If you know someone who needs to see it, share it. If you have questions ask below in comment section. Add it to a playlist if you want to watch it later. ___________________________________________________________ T A L K W I T H M E ! Business Email: [email protected] Youtube Channel: https://www.youtube.com/c/geekyshow1 Facebook: https://www.facebook.com/GeekyShow Twitter: https://twitter.com/Geekyshow1 Google Plus: https://plus.google.com/+Geekyshowsgeek Website: http://www.geekyshows.com/ ___________________________________________________________ Make sure you LIKE, SUBSCRIBE, COMMENT, and REQUEST A VIDEO! :) ___________________________________________________________
Views: 3843 Geeky Shows
JavaScript Change CSS Class Style className Toggle Tutorial
 
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Lesson Code: http://www.developphp.com/video/JavaScript/Change-CSS-Class-Style-className-Toggle-Tutorial Learn to change, toggle and swap CSS classes using JavaScript event handling.
Views: 35153 Adam Khoury
JavaScript: Allow Users To Change The Background Image
 
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A video tutorial showing you how to allow users to change the background image using JavaScript and PHP. http://www.abell12.com Follow us on Twitter http://www.twitter.com/abell12youtube
Views: 4471 abell12
Simple jquery progress bar
 
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Link for all dot net and sql server video tutorial playlists https://www.youtube.com/user/kudvenkat/playlists?sort=dd&view=1 Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/05/simple-jquery-progress-bar.html In this video we will discuss how to create a simple animated jquery progress bar using animate() function. Replace < with LESSTHAN symbol and > with GREATERTHAN symbol <html> <head> <script src="jquery-1.11.2.js"></script> <script type="text/javascript"> $(document).ready(function () { $('#myButton').click(function () { animateProgressBar($('#ddlPercent').val()); }); function animateProgressBar(percentComplete) { $('#innerDiv').animate({ 'width': (500 * percentComplete) / 100 }, 2000); $({ counter: 1 }).animate({ counter: percentComplete }, { duration: 2000, step: function () { $('#innerDiv').text(Math.ceil(this.counter) + ' %'); } }); } }); </script> </head> <body style="font-family:Arial"> Select percentage : <select id="ddlPercent"> <option value="10">10</option> <option value="20">20</option> <option value="30">30</option> <option value="40">40</option> <option value="50">50</option> <option value="60">60</option> <option value="70">70</option> <option value="80">80</option> <option value="90">90</option> <option value="100">100</option> </select> <input type="button" id="myButton" value="Start Animation" /> <br /><br /> <div id="outerDiv" style="background-color:#EEEEEE; height:20px; width:500px; padding:5px"> <div id="innerDiv" style="width:0px; height:19px; text-align:center; background-color:red; color:white"></div> </div> </body> </html>
Views: 42539 kudvenkat
CSS3 - 12. Changing your background image size
 
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In this video, we are going to look at how to change your background image size using CSS3. Up until now, the background image size depended on the size of the image you use, but with CSS3 you can change the size of your background image using CSS3. It's not the most fancy feature in CSS3, but it's still useful to know about it.
Views: 28787 Loot Tutorial
Add a large background image to your web page
 
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In this tutorial I will show you how to work with background images in HTML and CSS. By the end of the video you should know how to import an image and style it so that it fills the window. I'll also show you how to add an overlay so that any text can be easily read by the user.
Views: 55239 Ben Townsend
Full Screen Video Background (The Right Way) using  HTML, CSS, Bootstrap
 
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This tutorial will show you in just over 10 minutes how to create a stunning video background on your website. We're going to be using the latest techniques and a small JS helper to allow it to work perfectly on internet explorer as well. When I say the right way, I mean the best possible way so it is supported on most devices. We will be using: HTML5, CSS, Bootstrap and object-fit-videos.js, accessible here: https://github.com/TricomB2B/object-fit-videos. It's highly advisable to use SASS for this for ease of use, but I've done it using plain CSS. An HTML5 Full Screen Video on your website can make a massive impact. It's an amazing thing if done right. You want to also make sure your Full screen HTML video works on as many devices as possible. Hopefully this tutorial will assist you in learning how to do that!
Views: 202 Mr Digital
How To Add a Video Background with HTML & CSS
 
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In this video you will learn how to add a video background to your website. Download files: https://www.amazon.com/clouddrive/share/zZ2ngCbvgJCFpvD3OyTdrbDbHEndTmvULRxFJMzNkH5 Follow me on twitter: https://twitter.com/ieatwebsites
Views: 27189 iEatWebsites
How to Add Full Background Color in Css Code
 
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PHP Tutorial PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals PHP Forms PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete PHP Advanced PHP Arrays Multi PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Error Handling PHP Exception SQL Tutorial SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL And, Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL Union SQL Group By SQL Having SQL Exists SQL Any, All SQL Select Into SQL Insert Into Select SQL Null Functions SQL Comments SQL Database SQL Create DB SQL Drop DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting SQL References MySQL Functions SQL Server Functions MS Access Functions Oracle Functions SQL Operators SQL Data Types SQL Quick Ref SQL Quiz SQL Quiz JS Tutorial JS HOME JS Introduction JS Where To JS Output JS Syntax JS Statements JS Comments JS Variables JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Scope JS Events JS Strings JS String Methods JS Numbers JS Number Methods JS Math JS Random JS Dates JS Date Formats JS Date Methods JS Arrays JS Array Methods JS Array Sort JS Booleans JS Comparisons JS Conditions JS Switch JS Loop For JS Loop While JS Break JS Type Conversion JS Bitwise JS RegExp JS Errors JS Debugging JS Hoisting JS Strict Mode JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words JS Versions JS JSON JS Forms JS Forms Forms API JS Objects Object Definitions Object Properties Object Methods Object Prototypes JS Functions Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Closures JS HTML DOM DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists JS Browser BOM JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies JS AJAX AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples JS JSON JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Objects JSON Arrays JSON Parse JSON Stringify JSON PHP JSON HTML JSON JSONP JS Examples JS Examples JS HTML DOM JS HTML Input JS HTML Objects JS HTML Events JS Browser JS Quiz JS Certificate JS References JavaScript Objects HTML DOM Ob CSS Tutorial CSS HOME CSS Introduction CSS Syntax CSS How To CSS Colors CSS Backgrounds CSS Borders CSS Margins CSS Padding CSS Height/Width CSS Box Model CSS Outline CSS Text CSS Fonts CSS Icons CSS Links CSS Lists CSS Tables CSS Display CSS Max-width CSS Position CSS Overflow CSS Float CSS Inline-block CSS Align CSS Combinators CSS Pseudo-class CSS Pseudo-element CSS Opacity CSS Navigation Bar CSS Dropdowns CSS Tooltips CSS Image Gallery CSS Image Sprites CSS Forms CSS Website Layout CSS3 CSS3 Introduction CSS3 Rounded Corners CSS3 Border Images CSS3 Colors CSS3 Gradients CSS3 Shadows CSS3 Text CSS3 Fonts CSS3 2D Transforms CSS3 3D Transforms CSS3 Transitions CSS3 Animations CSS3 Images CSS3 object-fit CSS3 Buttons CSS3 Pagination CSS3 Multiple Columns CSS3 User Interface CSS3 Box Sizing CSS3 Flexbox CSS3 Media Queries CSS3 MQ Examples CSS Responsive RWD Intro RWD Viewport RWD Grid View RWD Media Queries RWD Images RWD Videos RWD Frameworks RWD Templates CSS Examples CSS Templates CSS Examples CSS Quiz CSS Exercises CSS Certificate CSS References CSS Reference CSS Selectors CSS Functions CSS Reference Aural CSS Web Safe Fonts CSS Animatable CSS Units CSS PX-EM Converter CSS Colors CSS Color Values CSS Default Values CSS Browser Support
Views: 29 Cambodia Learning
addeventlistener and removeeventlistener in JavaScript
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/01/addeventlistener-and.html In this video we will discuss assigning event handlers in JavaScript using the following special methods addEventListener removeEventListener attachEvent detachEvent Internet Explorer 9 (and later versions) & all the other modern browsers support addEventListener() and removeEventListener() methods. Sytnax for assigning event handler using addEventListener() method element.addEventListener(event, handler, phase) Sytnax for removing event handler using removeEventListener() method element.removeEventListener(event, handler, phase) Please note : The third parameter phase is usually set to false as it is not used. Example : In this example, we are passing values for all the 3 parameters including phase. [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] btn.addEventListener("mouseover", changeColorOnMouseOver, false); btn.addEventListener("mouseout", changeColorOnMouseOut, false); function changeColorOnMouseOver() { this.style.background = 'red'; this.style.color = 'yellow'; } function changeColorOnMouseOut() { this.style.background = 'black'; this.style.color = 'white'; } [/script] Since the third parameter "phase" is optional you can omit it if you wish. btn.addEventListener("mouseover", changeColorOnMouseOver); btn.addEventListener("mouseout", changeColorOnMouseOut); Example : This example demonstrates removing event handlers. [input type="button" value="Click me" id="btn"/] [input type="button" value="Remove Event Handlers" onclick="removeEventHandlers()" /] [script type="text/javascript"] btn.addEventListener("mouseover", changeColorOnMouseOver); btn.addEventListener("mouseout", changeColorOnMouseOut); function changeColorOnMouseOver() { this.style.background = 'red'; this.style.color = 'yellow'; } function changeColorOnMouseOut() { this.style.background = 'black'; this.style.color = 'white'; } function removeEventHandlers() { btn.removeEventListener("mouseover", changeColorOnMouseOver); btn.removeEventListener("mouseout", changeColorOnMouseOut); } [/script] Using this approach you can assign more than one event handler method to a given event. The order in which handler methods are executed is not defined. In this example, 2 event handler methods (clickHandler1 & clickHandler3) are assigned to click event of the button control. When you click the button both the handler methods are executed. [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] btn.addEventListener("click", clickHandler1); btn.addEventListener("click", clickHandler2); function clickHandler1() { alert("Handler 1"); } function clickHandler2() { alert("Handler 2"); } [/script] attachEvent() and detachEvent() methods only work in Internet Explorer 8 and earlier versions. Sytnax for assigning event handler using attachEvent() method element.attachEvent( "on"+event, handler) Sytnax for removing event handler using detachEvent() method element.detachEvent( "on"+event, handler) Example : This example will only work in Internet Explorer 8 and earlier versions. [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] btn.attachEvent("onclick", clickEventHandler); function clickEventHandler() { alert("Click Handler"); } [/script] Cross browser solution : For the above example to work in all browsers, modify the script as shown below. [input type="button" value="Click me" id="btn"/] [script type="text/javascript"] if (btn.addEventListener) { btn.addEventListener("click", clickEventHandler); } else { btn.attachEvent("onclick", clickEventHandler); } function clickEventHandler() { alert("Click Handler"); } [/script]
Views: 44137 kudvenkat
HTML5 Canvas Tutorial for Beginners | An Intro to Becoming a Pro - Ep. 1
 
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🚀Support Chris Courses with Patreon: https://www.patreon.com/chriscourses 🖥Professional Web Development Services from Chris: https://resovere.com/ Down to code some sick nasty interactive animations? Let me show you how. HTML5 canvas easily generates interest to what would be a boring ass website. It's what allows us to create generative art that is simply impossible to recreate by hand. With a little bit of coding, we can animate and interact with this art, creating wonders of beauty that are truly unique to the medium of digital technology. In this multi-part tutorial series, we cover four essential skills for any HTML5 canvas piece: 1. Creating and Resizing Your Canvas 2. Drawing Elements 3. Animating Elements 4. Interacting with Elements If you want to become an HTML5 canvas pro, these four skills will provide a rock solid foundation to build upon. In this episode, we cover skill number one: creating and resizing your canvas. Follow along and you'll be cranking out interactive wonders in no time. Video Timeline: ----------------------------- 0:17 - What is HTML5 canvas and why would we want to use it? 01:35 - The Four Essential Skills for any HTML5 canvas piece 02:46 - Screencast tutorial begins 05:14 - Creating the canvas 06:33 - Resizing the canvas 11:48 - How to draw on the canvas The Platform: ------------------------- http://chriscourses.com is a platform in progress whose goal is to educate aspiring and seasoned web developers via story driven learning. Each course tells a different story, and each milestone reveals a different scene. With an expansive universe to explore, you can track your progress, and gain the necessary skills needed to build your dreams. For updates on the progress of chriscourses.com and future videos, join the Chris Courses mailing list at http://chriscourses.com. Chris Courses Social: ------------------------------------- Twitter: https://twitter.com/chriscourses Facebook: https://www.facebook.com/chriscourses Instagram: https://www.instagram.com/chriscourses Christopher Lis Social: --------------------------------------- Twitter: https://twitter.com/christopher4lis CodePen: http://codepen.io/chriscourses Beats: ------------- Joakim Karud - Looking To The Sky w/Peter Kuli & Kasey Andre
Views: 354964 Chris Courses
CSS Fullscreen Background Image: (1/2)
 
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Want more? Explore the library at https://www.codecourse.com/lessons Official site https://www.codecourse.com Twitter https://twitter.com/teamcodecourse
Views: 101577 Codecourse
Move Element to Mouse Click Position
 
19:13
Master the handful of tricks you need to get an element to smoothly move to the exact position of your mouse click.
Views: 29951 Kirupa Chinnathambi
HTML iframe Example and Tutorial
 
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http://www.LittleWebHut.com This video demonstrates how to use the HTML / XHTML iframe tag. It will cover the basic usage for the iframe tag and demonstrate the scr, width, height, scrolling, name, and id attributes. This video will also show how to change the contents of the iframe tag using an anchor tag with its target attribute.
Views: 367644 tutor4u
Using Multiple Background Images in Your Html Document using CSS 3
 
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see the shorthnd css method of writing a one line short and simple code . Mohit Manuja http://qualitylessons.net
How to Inject Custom HTML and CSS into an iFrame
 
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Ever been to a site like JSBin, where you can write HTML, CSS, and JavaScript, and then see the results in a panel to the right? An iframe is how we can accomplish this task.
Views: 106297 Tuts+ Code
Css Bangla Tutorial Part 06 (Background Image Css)
 
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Css Bangla Tutorial Part 06 (Background image css) CSS background properties: background-color background-image background-repeat background-attachment background-position
Views: 436 Answer BD
Moving the background images using CSS and Javascript
 
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this videos is uploaded by balaji admane ...... for more tutorials visit https://www.nicedemo.in
Views: 2961 balaji admane
CSS & jQuery Tutorial: Popup Bubble Tooltip - Coda Style
 
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A nice jQuery Bubble Tooltip - Coda Style ( http://www.panic.com/coda ). Easy to make and to implement to your own html elements. It is also compatible with Internet Explorer but with some modifications. CODES: ____________________________ Import jQuery Library (url): _______________ http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js Javascript (jQuery): _______________ $(document).ready(function(){ $(".menu a").hover(function() { $(this).next("em").animate({opacity: "show", top: "-75"}, "slow"); }, function() { $(this).next("em").animate({opacity: "hide", top: "-85"}, "fast"); }); }); CSS: ______________ .menu { margin: 100px; list-style: none; } .menu li { padding: 0; margin: 0 1px; float: left; position: relative; text-align: center; } .menu a { padding: 10px; display: block; color: #222; width: 150px; text-decoration: none; background: #eaf2f5; -webkit-border-radius: 5px; border:1px solid #09C; } .menu li em { background: url(images/hover.png) no-repeat; width: 180px; height: 45px; position: absolute; top: -85px; left: -15px; text-align: left; padding: 20px; font:12px helvetica, arial, sans-serif; display: none; }
Views: 34511 WebScripts
CSS Tutorial | Backgrounds and Background Images
 
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Topic: CSS (also known as Cascading Style Sheets) Facebook: Facebook: https://www.facebook.com/CaucasianMark/ This is my second tutorial. I am covering CSS. Next I will do HTML and Javascript and so on. If you have any questions then send them my way. Don’t get to like, share subscribe, and leave a positive comment below. About CSS: Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language. Although most often used to set the visual style of web pages and user interfaces written in HTML and XHTML, the language can be applied to any XML document, including plain XML, SVG and XUL, and is applicable to rendering in speech, or on other media. Along with HTML and JavaScript, CSS is a cornerstone technology used by most websites to create visually engaging webpages, user interfaces for web applications, and user interfaces for many mobile applications. CSS is designed primarily to enable the separation of document content from document presentation, including aspects such as the layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, enable multiple HTML pages to share formatting by specifying the relevant CSS in a separate .css file, and reduce complexity and repetition in the structural content. This separation of formatting and content makes it possible to present the same markup page in different styles for different rendering methods, such as on-screen, in print, by voice (when read out by a speech-based browser or screen reader) and on Braille-based, tactile devices. It can also be used to display the web page differently depending on the screen size or device on which it is being viewed. Readers can also specify a different style sheet, such as a CSS file stored on their own computer, to override the one the author has specified. Changes to the graphic design of a document (or hundreds of documents) can be applied quickly and easily, by editing a few lines in the CSS file they use, rather than by changing markup in the documents. The CSS specification describes a priority scheme to determine which style rules apply if more than one rule matches against a particular element. In this so-called cascade, priorities (or weights) are calculated and assigned to rules, so that the results are predictable. The CSS specifications are maintained by the World Wide Web Consortium (W3C). Internet media type (MIME type) text/css is registered for use with CSS by RFC 2318 (March 1998). The W3C operates a free CSS validation service for CSS documents. Tags: css tutorial, css tutorial for beginners, css3, css animation, css positioning, css tricks, css, css and html, css absolute and relative positioning tutorial, css basics, css box model, css edit, css effects, html5 and css3, css flexbox, css float, css for beginners, css framework, css html, css html tutorial, css inline block, css layout, css layout tutorial, css layout techniques, css menu, css media queries, css navigation bar tutorial, css navigation bar, css navbar, css nav, css opacity, css online, css overview, css padding, css 3 column layout, css3 tutorial, css3 animation, css3 media queries, html 5 css 3 tutorial, html5 css3
Views: 74 Caucasian Mark
Chapter 18 How to set background image in CSS Hindi
 
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Create Amazing Bubbles Background In Pure JavaScript – bubble bg
 
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The bubble-bg JavaScript library let you create fantastic bubbles with gradient colors and smooth animations for the background. Powered by HTML5 canvas element and without the need of any images. How to use it: Load the core JavaScript file background.js in the document when needed. Download Codes: https://github.com/pbondoer/bubble-bg/archive/master.zip
Custom Alert Box Programming JavaScript CSS HTML Tutorial
 
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Lesson Code: http://www.developphp.com/video/JavaScript/Custom-Alert-Box-Programming-Tutorial JavaScript comes equipped with stock dialog boxes that work well enough for alerting, confirming, and prompting for values. But most of the top interactive websites create their own custom dialog windows. Creating these windows yourself gives you more control over the interaction with the user, and allows you to customize every single aspect of the dialog window. In this first video lesson we will cover creating a dynamic custom alert box dialog from scratch. In the two following videos we will cover confirm and prompt boxes.
Views: 102819 Adam Khoury