Description:
This method returns the square root of a number. If the value of number is negative, sqrt returns NaN.
Syntax:
Math.sqrt( x ) ; |
- 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>
|
First Test Value : 0.7071067811865476 Second Test Value : 9 Third Test Value : 3.605551275463989 Fourth Test Value : NaN
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