What does ===! operator in JS mean?

Question

What does ===! operator in JS mean?

Just checked in the browser console,

5 ===! 5  //false
5 ===! 6  //false
5 ===! 7  //false

What's the meaning of ===! ? Yes, three equal signs and exclamation sign thereafter. Thank you.

Or, 5 ===! 5 is treated as 5 === false ?

Nope. Exactly as I've asked. Otherwise I won't ask, as I know ! and the difference between == and ===. Thank you. — Haradzieniec, Oct 21 '15 at 16:59
Related: http://stackoverflow.com/questions/1642028/what-is-the-name-of-the-operator — Seiyria, Oct 21 '15 at 17:01

Bergi · Accepted Answer · 2015-10-21T17:04:05.460

11

It's not an operator, it's two of them. It is parsed as 5 === (!5), whitespace is ignored between tokens.

edited Oct 21 '15 at 17:04

answered Oct 21 '15 at 16:58

Bergi

Hehe... thank you. So, even ===!5 is treated as === !5. Didn't pay attention to that. – Haradzieniec Oct 21 '15 at 17:00
Yes, it's four tokens: `5`,`===`,`!`,`5`. Whitespace doesn't matter. – Bergi Oct 21 '15 at 17:01

1 Answers1