javascript how to check if a number is negative code example

Example 1: how to turn a number negative in javascript

-Math.abs(num); // "-" before Math.abs()

Example 2: check if number is negative javascript

const positive = 5;
const negative = -5;
const zero = 0;

Math.sign(positive); // 1
Math.sign(negative); // -1
Math.sign(zero); // 0