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JavaScript sqrt() Method
JavaScript Math Object
Definition and Usage
The sqrt() method returns the square root of a number.
Syntax
Math.sqrt(x)
| Parameter | Description |
|---|---|
| x | Required. A number. If x is a negative number, NaN is returned |
Browser Support
The sqrt() method is supported in all major browsers.
Example
Example
Return the square root of different numbers:
<script type="text/javascript">
document.write(Math.sqrt(0) + "<br />");
document.write(Math.sqrt(1) + "<br />");
document.write(Math.sqrt(9) + "<br />");
document.write(Math.sqrt(0.64) + "<br />");
document.write(Math.sqrt(-9));
</script>
document.write(Math.sqrt(0) + "<br />");
document.write(Math.sqrt(1) + "<br />");
document.write(Math.sqrt(9) + "<br />");
document.write(Math.sqrt(0.64) + "<br />");
document.write(Math.sqrt(-9));
</script>
The output of the code above will be:
0
1
3
0.8
NaN
1
3
0.8
NaN
Try it yourself »
JavaScript Math Object
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Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.