Read: 06a - Dynamic web pages with JavaScript

Have you ever visited a site and an alert window appeared in front of you informing you of your welcome to our site؟ It’s the JavaScript that does this

javascript on the Internet are files with js exection like this JavaScript.js

and js will do this in client side JS

We will discuss this now

Let’s Start

What is Java Script

Javascript is a computer programming language used by software developers to create applications.
Javascript is called a "script" language because it can be used to write lists or "scripts" of instructions that don't need translation into another
form before a computer can interpret the instructions. Non-script types of programming languages require that a software developer create the language
in what in one form, and require a conversion into another form before the program can by used on a computer.

Where is Javascript used?

Javascript is used primarily in web pages to make the web pages interactive
 For example, change and update h1 content

JS

For More Info About GitHub Pages Plz Folowing the Link : w3schools

For Example :

<!DOCTYPE html>
<html>
<body>

<h2>My First JavaScript</h2>

<button type="button"
onclick="document.getElementById('demo').innerHTML = Date()">
Click me to display Date and Time.</button>

<p id="demo"></p>

</body>
</html> 

Example Link : My First JavaScript

Contact Info :

Please Feel Free To Contact Me When You Need help ^_^