Use Case

I have a collection of objects returned from a REST request. Angular automatically populates each element with a $$hashKey. The problem is that when I search for an object in that array without the $$hashKey, it returns -1. This makes sense. Unfortunately, I don't have knowledge of the value of $$hashKey.

Question

Is there a more effective way to search for an object within an object collection returned from a REST request in AngularJS without stripping out the $$hashKey property?

Code

function arrayObjectIndexOf(arr, obj) {

var regex = /,?$$hashKey:.*?,?/;

    var search = JSON.stringify(obj).replace(regex, '');

    console.log(search);

    for ( var i = 0, k = arr.length; i < k; i++ ){

        if (JSON.stringify(arr[i]).replace(regex, '') == search) {

            return i;

        }

    };

    return -1;

};