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 since June 2017:


Chrome 51	Edge 15	Firefox 54	Safari 10	Opera 38
May 2016	Apr 2017	Jun 2017	Sep 2016	Jun 2016

Math.sign() is not supported in Internet Explorer.

Math.sign(x)

Parameter	Description
x	Required. A number.

A Number, representing the sign of the specified number: