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Detect empty values in JavaScript

/ Published in: JavaScript
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  1. function isEmpty(obj)
  2. {
  3.     if (typeof obj == 'undefined' || obj === null || obj === '') return true;
  4.     if (typeof obj == 'number' && isNaN(obj)) return true;
  5.     if (obj instanceof Date && isNaN(Number(obj))) return true;
  6.     return false;
  7. }

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