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Thursday, March 13, 2014

Posted by amikitinfo
No comments | 9:34 PM

Javascript Math - sqrt Method

Description:

This method returns the square root of a number. If the value of number is negative, sqrt returns NaN.

Syntax:

Math.sqrt( x ) ;
Here is the detail of parameters:
  • x: A number

Return Value:

Returns the sine of a number.

Example:

<html>
<head>
<title>JavaScript Math sqrt() Method</title>
</head>
<body>
<script type="text/javascript">

var value = Math.sqrt( 0.5 );
document.write("First Test Value : " + value ); 
  
var value = Math.sqrt( 81 );
document.write("<br />Second Test Value : " + value ); 

var value = Math.sqrt( 13 );
document.write("<br />Third Test Value : " + value ); 

var value = Math.sqrt( -4 );
document.write("<br />Fourth Test Value : " + value ); 
</script>
</body>
</html>
This will produce following result:
First Test Value : 0.7071067811865476
Second Test Value : 9
Third Test Value : 3.605551275463989
Fourth Test Value : NaN 
 
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