What is JavaScript?

Java Script is a scripting language that enables web developers/designers to build more functional and interactive websites.

A scripting language is a lightweight programming language.

 
Common uses of Java Script include:

• Alert messages
• Popup windows
• Dynamic dropdown menus
• Form validation
• Displaying date/time

The <script> Tag : 

To insert a JavaScript into an HTML page, use the <script> tag.
The <script> and </script> tells where the JavaScript starts and ends.


Example :


<script type="text/javascript">
document.write("Welcome to JavaScript");
</script>

 <script>
alert("Hi welcome to Java script world");
</script>