JavaScript sqrt() Method
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JavaScript sqrt() Method
❮ JavaScript Math Object
Example
Return the square root of a number:
Math.sqrt(9);
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The result will be:
3
Try it Yourself »
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 |
|---|---|
| x | Required. A number |
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Technical Details
| Return Value: | A Number. If x is a negative number, NaN is returned |
|---|---|
| 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);
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The result of a,b,c,d, and e will be:
0
1
3
8
NaN
Try it Yourself »
❮ JavaScript Math Object
