Hint
null is only == to null and undefined — NOT to 0, false, or "".
console.log(0 == false);
console.log('' == false);
console.log(null == undefined);
console.log(null == false);true true true false
Explanation: 0==false: both→0. ""==false: both→0. null==undefined: spec rule. null==false: null only equals null or undefined.
Key Insight: null is only == to null and undefined — NOT to 0, false, or "".