JavaScript Introduction

JavaScript Introduction

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.JavaScript is the world's most popular programming language.JavaScript is the programming language of the Web.JavaScript is easy to learn.

JavaScript can change the Html content
One of many JavaScript HTML methods is getElementById().

The example below "finds" an HTML element (with id="demo"), and changes the element content (innerHTML) to "Hello JavaScript".

JavaScript Key Points and Features:

  • Client /side scripting language.
  • JavaScript is not java.
  • Used to provide instant feedback.
  • Better usability.
  • Richer web application.
  • Works the DOM(i.e.HTML,XML,etc....).
  • Light Weight Scripting language.
  • Dynamic Typing.
  • Object-oriented programming support.
  • Functional Style.
  • Platform Independent.
  • Prototype-based.
  • Interpreted Language.
  • Async Processing.





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