Use of JavaScript in different ways in html document

We can use java script in html page by three method.

·         In header section

·         In body  section (bottom of the body)

·         External  JavaScript

If we are using java  script in header and body section then we must

Put  our code between script tag.

(<script>………..</script>)

We can use JavaScript  same like external css.

But if we are using external jacvascript. Then we don’t need script tag.

And the extension of JavaScript is  (.js)

Example:

Script.js

This is the example of an external JavaScript file. Here you  sees that the extension of JavaScript is .js