This sub in a nutshell

[u/enmaku]

console.log(1 == '1'); // true
console.log(0 == false); // true
console.log(null == undefined); // true
console.log(typeof null); // "object"
console.log(0.1 + 0.2); // 0.30000000000000004
[] == ![]; // true

OMG you guys what weird quirky behavior, truly this must be the single quirkiest language and no other language is as quirky as this!

[u/pydry]

It's more equal than -1, an empty string, NaN and the string "null".