What is the difference between window.onload and document.onload in Javascript?

Samual Sam
Published on 23-Jan-2018 06:40:43
document.onloadIt gets fired prior to loading of images and other external content. document.onload event is fired before the window.onload.window.onloadIt gets fired when the complete page loads, which includes images, scripts, css, etc.ExampleHere’a an example to understand onload.Live Demo<html>    <head>       <title>JavaScript Animation</title>       <script>   ... Read More

How to place JavaScript in External Files?

Amit Sharma
Published on 10-Jan-2018 10:29:19
To place JavaScript in external file create an external JavaScript file with the extension .js. After creating, add it to the HTML file in the script tag. The src attribute is used to include that external JavaScript file.If you have more than one external JavaScript file, then add it to ... Read More

When should I use an Inline script and when to use external JavaScript file?

Sai Subramanyam
Published on 23-Jan-2018 06:31:13
To enhance performance, try to keep JavaScript external. The separate code makes it easier for web browsers to cache. However, use inline scripts only when you’re making single page websites. Still, it's better to use external code i.e. external JavaScript. To place JavaScript in external file create an external JavaScript ... Read More

How do I put a jQuery code in an external .js file?

Ali
Ali
Published on 10-Jan-2018 08:24:31
Create an external JavaScript file and add the jQuery code in it.ExampleLet’s say the name of the external file is demo.js. To add it in the HTML page, include it like the following −<html>    <head>       <script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>       <script src="demo.js"></script>    </head> ... Read More

What is the difference between anonymous and inline functions in JavaScript?

Rahul Sharma
Published on 10-Jan-2018 08:21:40
Anonymous FunctionsAnonymous, as the name suggests, allows creating a function without any names identifier. It can be used as an argument to other functions. This is how JavaScript anonymous functions can be used −var myfunc = function() {    alert(‘This is anonymous'); }Another example can be the following −setTimeout(function() { ... Read More

How to use external “.js” files in an HTML file?

Johar Ali
Published on 10-Jan-2018 08:14:25
Create external JavaScript file with the extension .js. After creating, add it to the HTML file in the script tag. The src attribute is used to include that external JavaScript file.If you have more than one external JavaScript file, then add it in the same web page to increase performance ... Read More

How to write JavaScript in an External File?

Amit Sharma
Published on 10-Jan-2018 07:53:56
Create external JavaScript file with the extension .js. After creating, add it to the HTML file in the script tag. The src attribute is used to include that external JavaScript file.If you have more than one external JavaScript file, then add it in the same web page to increase performance ... Read More

Should I always put my JavaScript file in the head tag of my HTML file?

Ali
Ali
Published on 10-Jan-2018 07:27:33
You can place the <script> tags, containing your JavaScript, anywhere within your web page, but it is normally recommended that you should keep it within the <head> tag or <body> tag.It’s good for performance to add JavaScript in <body> element. Here’s an example to add <script> under <body>…</body> −<html>   ... Read More

Why prefer to put JavaScript in the footer of an HTML page?

Rahul Sharma
Published on 10-Jan-2018 07:11:34
With JavaScript, you can put JavaScript anywhere on the page, whether inside <head> or <body> tag. But, it is a good practice to add JavaScript in the footer i.e. just before closing the <body> tag. This is because −It loads script faster.It will not block any DOM content to load.It ... Read More

Should I write my script in the body or the head of the HTML?

Johar Ali
Published on 10-Jan-2018 07:02:50
It is suggested that you should place the script within the <head> tag or <body> tag. It is good for performance to add JavaScript in <body> element.ExampleHere is an example to add <script> under <body>…</body> −<html>    <body>       <script>          <!--       ... Read More
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