associative arrays made easy.

findBy.js

/*
	findBy: associative arrays made easy.
		Usage:
			var myArr = [{id: "foo"}, {id: "bar"}];
			var result = findBy(myArr, "id", "foo"); //returns {id: "foo"}
*/

var findBy = function(arr, identifier, name) {
  for (var i = 0; i < arr.length; i++) {
    if (arr[i][identifier] == name) {
      return arr[i];
    }
  }
};