I was reading the “Types and Grammar” section of the You Don’t Know JS book and I am having a hard time understanding this.
Why is an empty array equal to false?
console.log(false == []); // true
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Sebastian Simon
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https://stackoverflow.com/questions/19146176/javascript-empty-array-evaluates-to-true-in-conditional-structures-why-is – beskgar Jun 27 '20 at 04:04
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2Does this answer your question? [Empty arrays seem to equal true and false at the same time](https://stackoverflow.com/questions/5491605/empty-arrays-seem-to-equal-true-and-false-at-the-same-time) — second result for “js empty array equals false” in Google (the other link is the first result). – Sebastian Simon Jun 27 '20 at 04:33
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@pramodsingh What? This has nothing to do with this question. – Sebastian Simon Jun 27 '20 at 04:34
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But it returns `true` for me ! – Menai Ala Eddine - Aladdin Jun 27 '20 at 04:42
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Equality_comparisons_and_sameness – Ziaullhaq Savanur Jun 27 '20 at 04:46
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When you do [] == false, behind the scenes the Array.prototype.toString method is called with that empty array as its this context, which returns the empty string "" and the empty string is a falsy value in JavaScript.
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Marik Ishtar
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2@hev1 [The specification](https://tc39.es/ecma262/) calls it “the empty string” _because there’s only one_. – Sebastian Simon Jun 27 '20 at 04:42
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