JavaScript - Math.sqrt() Method
The JavaScript Math.sqrt() method returns the square root of the given number.
Syntax
Math.sqrt(x)
Parameters
x |
Specify a positive number. |
Return Value
Returns the square root of the specified number.
If the x is negative, it returns NaN.
Example:
In the example below, Math.sqrt() method is used to find out the square root of the given number.
var txt; txt = "Math.sqrt(25) = " + Math.sqrt(25) + "<br>"; txt = txt + "Math.sqrt(50) = " + Math.sqrt(50) + "<br>"; txt = txt + "Math.sqrt(100) = " + Math.sqrt(100) + "<br>"; txt = txt + "Math.sqrt(-1) = " + Math.sqrt(-1) + "<br>";
The output (value of txt) after running above script will be:
Math.sqrt(25) = 5 Math.sqrt(50) = 7.0710678118654755 Math.sqrt(100) = 10 Math.sqrt(-1) = NaN
❮ JavaScript - Math Object
