JavaScript : Introduction

JavaScript (JS) is a computer programming language.
 - > It is basically scripting language which was developed by Netscape and Mozilla foundation.
  -> It was released in year 1995 .
  -> It can be used within or outside of HTML page.
  -> It is very popular client-side scripting language.
  -> Almost in every web development javascript is used.
  -> Earlier known as LiveScript .
  -> Lightweight , interpreted,object-oriented.

Example : 

          

Note: Save the File with .htm or .html extension (ex- helloworld.html) and run the file in browser

Advantage : 

-> Reduce Server Call

-> Avoid Reloading of Page.

-> You can do drag-drop , mouse hover actions , create events , validation

-> Create Rich dynamic interfaces