Wow, Javascript, so powerfull..

Following this Stackoverflow question:

Can (a ==1 && a== 2 && a==3) ever evaluate to true?

And the answer is .. yes..

const a = {
  i: 1,
  toString: function () {
    return a.i++;
  }
}

if(a == 1 && a == 2 && a == 3) {
  console.log('Hello World!');
}

Thank you , loose equality operators.
Not sure, if it is used as intended;)