RE: When JavaScript is trolling you

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When JavaScript is trolling you

in javascript •  7 years ago 

In JavaScript, false and 0 are not strict equally. Since it’s not a strong typed language, isNaN will considere 0 and return as false. Nowadays you can use isNumber to strictly check that. It’s safer.

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7 years ago by

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      ·  7 years ago 

    Yes. What really made me want to throw a fit was when an empty string passed. I used isNumber()

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      ·  7 years ago 

    LOL, no I didn't ...

    Screenshot of JavaScript console showing ! isNaN() in use

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