What is the use of while({}) in javascript

Asked May 03 '21 at 22:57

Active May 03 '21 at 23:03

Viewed 29 times

({}) === true and ({}) == true both return false however:

while({}){console.log("I'm running...")}

will cause cnosole.log to execute indefinitely.

How is the while loop taken if the expression equals false and where does this statement gets used?

asked May 03 '21 at 22:57

Dan

1

an object is a truthy value, so `while({})` is the same as `while(true)`. Why you'd write the former, I've no idea as it's just more obtuse way of writing the latter. – VLAZ May 03 '21 at 22:58
Because `!!{}` will return `true` – Loi Nguyen Huynh May 03 '21 at 22:59
but then why does `({}) == true` is false if an object is a truthy value? – Dan May 03 '21 at 22:59
2

welcome to javascript – The Fool May 03 '21 at 23:00
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For the same reason `2 == true` is false, even though 2 is truthy – dave May 03 '21 at 23:00
You can do `Boolean({})` to see whether a value is truthy or not – dave May 03 '21 at 23:01
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@dan because truthy basically means *converts to true* not *is equal to true* – VLAZ May 03 '21 at 23:01
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`({}) === true` is just as true as `({}) === false` ;) – Gershom Maes May 03 '21 at 23:05

0 Answers0