Math.sqrt()
ES1+Returns the square root of a number.
Syntax
Math.sqrt(x)Parameters
x number A number
Return Value
number
The square root of the given number, or NaN if negative
Examples
JavaScript
console.log(Math.sqrt(9));
console.log(Math.sqrt(2));
console.log(Math.sqrt(-1));Output:
// 3
1.4142135623730951
NaN