Basic Of JavaScript Day 1



Introduction :

  • JavaScript is a object-oriented , dynamic programming language.
  • JavaScript is a very powerful client-side scripting language.
  • JavaScript is used mainly for enhancing the interaction of a user with the webpage.
  • JavaScript is also being used widely in game development and mobile application development.
  • JavaScript can be run on any operating systems and almost all web browsers.

History :

  •  JavaScript was created by Brendan Eich in 1995.
  • JavaScript's original name was Mocha.
  • JavaScript has nothing to do with java.
  • Java was famous at that time, hence the name "JavaScript" was chosen, to ride on Java's success.
  • Microsoft created a reverse-engineered version of JavaScript, know as JScript.

Example :

Program-

<html>
<body>
<b>This is a first Program of JavaScript</b>
<script>
var x=0;
X++;
alert(X);
var X="Hello";
alert(X);
</script>
</body>
</html>

Output-



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