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I'm trying to understand the following case:

> "1" === 1
false

> "1" == 1
true

> true === 1
false

> true == 1
true

> "true" === true
false

> "true" == true
false

Why javascript comparison ("true" == true) is false?

Also, what is the proper way to compare this one?

Teddy Sterne
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Willian
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2 Answers2

1

Question has been asked before here.

In essence, "true" is converted to NaN, while true is converted to 1 (which is a boolean. Hence, they differ.

cedes
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1

The Boolean in the comparison is going to have an implicit conversion to Number (0/1) so 1=true gets true, but "true" == true (1), so the string can't be equal to Number, it gets false

小前端__Mr陈
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