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Searching for objects in JavaScript arrays

Answer 1

+2 A:

Searching for a value in an array typically requires a sequential search, which requires you to loop over each item until you find a match.

function search(ar, value) {
  var i, j;
  for (i = 0; i < ar.length; i++) {
    for (j in ar[i]) {  
      if (ar[i][j] === value) return i;
    }
  }
}

search([{'x': 'y'}, {'p': 'q'}, {'u': 'v'}], 'v'); // returns 2;

Daniel Vassallo 2010-09-02 07:51:04

yep , that way I understand. I thought if there is some inbuilt functions to do the search , like we can sort an array depending on the objects property using array.sort() and compare function.

sat 2010-09-02 07:56:48

@sat: Not really. These are the methods available for Arrays: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array. In JavaScript 1.6 there is the `filter()` method, but that would still be too complex for your requirement.

Daniel Vassallo 2010-09-02 08:07:41

Thanks for the information.

sat 2010-09-02 08:52:14

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