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JavaScript Random Number

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The random object is used to generate a random numbers in JavaScript. It generates the number from 0 to 1 by using Math.random( ) object in the program which is a method of JavaScript Math object. The Math object provides built-in-functions that perform mathematical operations.

Math.random Syntax

var x= Math.random( );

Math.random Example

<!DOCTYPE html>

<head>

<title>Random number</title>
</head>
<body>

<script type="text/javascript">

var x= Math.random();
document.write("1st Random Number: " +x+ "<br>");

var x= Math.random();
document.write("2nd Random Number: "  +x);

</script>

</body>
</html>
  • In the above example we have shown that how random number is been used in the program.
  • We have generated a random number by using Math.random( ) object in the program.
  • var x= Math.random(); is used for generating a random number.

JavaScript Random Number Demo

  • Save the file as generaterandomnumber_example.html in your system.
  • Just open the file in the browser, you will see the below picture in the browser.

When the execution process is completed successfully we will get the following output:

JavaScript Random Number

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.