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
– Haradzieniec, Commented Oct 21, 2015 at 16:59

Bergi · Accepted Answer · 2015-10-21 17:04:05Z

12

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

answered Oct 21, 2015 at 16:58

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2 Comments

Hehe... thank you. So, even ===!<space>5 is treated as === !5. Didn't pay attention to that.

Yes, it's four tokens: 5,===,!,5. Whitespace doesn't matter.