Learn ECMAScript - Second Edition

The Math.sign(number) function

The Math.sign() function returns the sign of a number, indicating whether the number is negative, positive, or zero. Here is an example to demonstrate this:

console.log(Math.sign(11));console.log(Math.sign(-11));console.log(Math.sign(0));

The output is as follows:

1-10

From the preceding code, we can see that the Math.sign() function returns 1 if the number is positive, -1 if the number is negative, and 0 if the number is zero.