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nishanths/javascript-falsy-list.md

Last active April 7, 2023 13:06
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javascript-falsy-list.md

Falsy values

  • false
  • null
  • undefined
  • +0, -0, NaN, 0n
  • "" (empty string)
  • document.all in browser environments

Values not on this list are truthy.

Note: "''" is truthy. It is not an empty string: it is a string that contains an empty string.

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A better reference is: https://developer.mozilla.org/en-US/docs/Glossary/Falsy.

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