JavaScript Introduction

What is JavaScript

JavaScript is a popular object-based client-side scripting language used to create dynamic and interactive web pages. JavaScript is an interpreted language that is generally used with HTML, and programs written in JavaScript are called lightweight scripts.

History of JavaScript

  • JavaScript was created by Brendan Eich in 1995.
  • The original name of JavaScript was Mocha, but it was quickly known as LiveScript and, later, JavaScript.
  • Javascript is an implementation of the ECMA script language standard and ECMA-262 is the official javascript standard.
  • The official standardization was adopted by the ECMA organization in 1997.

Use of Javascript

  • Change HTML Elements
  • Text Animation
  • Graphic Animation
  • Client-side form validation
  • Create new HTML Elements
  • Delete HTML Elements
  • Copy and Clone HTML Elements
  • Website navigation

Advantages of Javascript

  • Javascript will be supported by all web browsers.
  • There is no need to go frequently to the server.
  • It will give a response to us immediately.
  • Javascript can be learned very easily.
  • Javascript is used in many application

Features of JavaScript

  • Light Weight Scripting language
  • Dynamic Typing
  • Object-oriented programming support
  • Functional Style
  • Interpreted Language
  • Async Processing
  • Client-Side Validation