Math.sqrt( ) |
compute a square root |
Availability
JavaScript 1.0; JScript 1.0; ECMAScript v1
Synopsis
Math.sqrt(x)
Arguments
- x
-
A numeric value greater than or equal to zero.
Returns
The square root of x. Returns
NaN if x is less than
zero.
Description
Math.sqrt( ) computes the square root of a number.
Note, however, that you can compute arbitrary roots of a number with
Math.pow( ). For example:
Math.cuberoot = function(x){ return Math.pow(x,1/3); }
Math.cuberoot(8); // Returns 2
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