JavaScript - Math sqrt Method
Advertisements
Description
This method returns the square root of a number. If the value of a number is negative, sqrt returns NaN.
Syntax
Its syntax is as follows −
Math.sqrt( x ) ;
Parameter Details
x − A number
Return Value
Returns the square root of a given number.
Example
Try the following example program.
Live Demo<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>
Output
First Test Value : 0.7071067811865476 Second Test Value : 9 Third Test Value : 3.605551275463989 Fourth Test Value : NaN
javascript_math_object.htm
Advertisements