JavaScript Math.sign()

let x = Math.sign(3);

Description

The Math.sign() method retuns whether a number is negative, positive or zero.

If the number is positive, this method returns 1.
If the number is negative, it returns -1.
If the number is zero, it returns 0.

let x = Math.sign(-3);

let x = Math.sign(0);

Math.sign() is an ECMAScript6 (ES6) feature.

ES6 (JavaScript 2015) is supported in all modern browsers:


Chrome	Edge	Firefox	Safari	Opera
Yes	Yes	Yes	Yes	Yes

Math.sign() is not supported in Internet Explorer 11 (or earlier).

Math.sign( x)

Parameter	Description
x	Required. A number.

A Number, representing the sign of the specified number: