I have the following expression:
!([BLANK] === 4) && "STRing" === "STRing"
My question is, what does the ! symbol mean in this expression?
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Spectric
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Mohamad Abdelsamad
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`&&` is called short circuit operator. And consider priority of operators. – Akihito KIRISAKI Dec 19 '20 at 20:38
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BLANK is a Variable – Mohamad Abdelsamad Dec 19 '20 at 20:42
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i m asking what does the ! actually do to the to code !(var ===4 ) it returns false – Mohamad Abdelsamad Dec 19 '20 at 20:43
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1Does this answer your question? [What does an exclamation mark before a variable mean in JavaScript](https://stackoverflow.com/questions/19491491/what-does-an-exclamation-mark-before-a-variable-mean-in-javascript) – Enis Arik Dec 20 '20 at 09:24
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The ! symbol is used to indicate whether the expression defined is false or not.
For example, !(5==4) would return true, since 5 is not equal to 4.
The equivalent in English would be not.
Some further tests:
var Spectric = "cool";
console.log("Is 5 not equal to 4? "+!(5==4)); //true
console.log("Is 'foo' not equal to 'bar'? "+!("foo"=="bar")); //true
console.log("Is Spectric not equal to Spectric? "+!(Spectric==Spectric)); //false
Spectric
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