JavaScript sqrt()Method

Example

Return the square root of a number:

Math.sqrt(9);

Output:

The sqrt() method returns the square root of a number.

All major browsers support the sqrt() method

Math.sqrt(x)

Parameter	Description
x	Required. Must be a number greater than or equal to 0.

Type	Description
Number/NaN	The square root of parameter x. If x is less than 0, NaN is returned.

JavaScript Version:	1.0

In this example, we will 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);

a,b,c,d, andeOutput:

0
1
3
8
NaN

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