Why 1000000 and 1_000_000 both are same?

Question

const a = 1000000;
const b = 1_000_000;

now if i checked

console.log(1000000 === 1_000_000);

and it's return true

Why 1000000 and 1_000_000 both are same in javascript?

Why wouldn't they be the same? Is it because you are expecting a string comparison? — raddevus, Feb 18 '21 at 13:54
your question has been answered here https://stackoverflow.com/questions/40835092/making-large-numbers-in-javascript-code-more-readable — Ahmed Elgammudi, Feb 18 '21 at 13:58
@VLAZ Yes, your example is better but all of these are expressions returning numbers. — Thomas Sablik, Feb 18 '21 at 14:01
@ThomasSablik true, it's just that `1+1` will do an extra operation, while `1.0` and `1` are exactly the same value, just like `1000000` and `1_000_000` — VLAZ, Feb 18 '21 at 14:03

score 1 · Answer 1 · answered Feb 18 '21 at 13:56

1

Because the underscores are optional and purely for legibility.

Be careful using them in native JavaScript though, since they're not supported in all browsers: CanIUse

answered Feb 18 '21 at 13:56

DustInComp

1 Answers1