Jquery how to find an Object by attribute in an Array

Question

Given I have an array of \"purpose\" objects:

//array of purpose objects:
var purposeObjects = [
    {purpose: \"daily\"},
    {purpose: \"weekly\"},
    {pu         


        

Answer 1

Best, Fastest way is

function arrayLookup(array, prop, val) {
    for (var i = 0, len = array.length; i < len; i++) {
        if (array[i].hasOwnProperty(prop) && array[i][prop] === val) {
            return array[i];
        }
    }
    return null;
}