JAVASCRIPT

Is It Negative Zero (-0)? js

//‘loose’ equality
console.log(+0 == -0); // true

//‘strict’ equality
console.log(+0 === -0); // true

//‘Same-value’ equality (ES2015's Object.is)
console.log(Object.is(+0, -0)); // false

//‘Same-value-zero’ equality (ES2016)
console.log([+0].includes(-0)); // true