Best way to find an item in a JavaScript Array ?

Posted by zimbatm on Stack Overflow See other posts from Stack Overflow or by zimbatm
Published on 2008-09-27T15:41:12Z Indexed on 2010/03/27 0:43 UTC
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JavaScript

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arrays

What is the best way to find if an object is in an array ?

This is the best way I know:

function include(arr, obj) {
  for(var i=0; i<arr.length; i++) {
    if (arr[i] == obj) return true;
  }
}

include([1,2,3,4], 3); // true
include([1,2,3,4], 6); // undefined

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