Why is tab equal to false in JavaScript?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/57372554/why-is-tab-equal-to-false-in-javascript

Answer 1

See Abstract Equality Comparison::

The comparison x == y, where x and y are values, produces true or false. Such a comparison is performed as follows:

So, in your situation, x is a string, and y is a boolean. The first condition that is fulfilled here is:

9. If Type(y) is Boolean, return the result of the comparison x == ToNumber(y).

Turning the check into

'' == 0

Which then fulfills:

7. If Type(x) is String and Type(y) is Number, return the result of the comparison ToNumber(x) == y.

And ToNumber('') === 0:

console.log(Number(''));