JavaScript sqrt() Method
More "Try it Yourself" examples below.
Definition and Usage
The sqrt() method returns the square root of a number.
Browser Support
Method | |||||
---|---|---|---|---|---|
sqrt() | Yes | Yes | Yes | Yes | Yes |
Syntax
Math.sqrt(x)
Parameter Values
Parameter | Description |
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x | Required. A number |
Technical Details
Return Value: | A Number. If x is a negative number, NaN is returned |
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JavaScript Version: | ECMAScript 1 |
More Examples
Example
Return the square root of different numbers:
var a = Math.sqrt(0);
var b = Math.sqrt(1);
var c = Math.sqrt(9);
var d = Math.sqrt(64);
var e = Math.sqrt(-9);
Try it Yourself »
❮ JavaScript Math Object