indexOf method in an object array?

Question

What\'s the best method to get the index of an array which contains objects?

Imagine this scenario:

var hello = {
    hello: \'world\',
    foo: \'ba         


        

Answer 1

I have made a generic function to check the below is the code & works for any object

function indexOfExt(list, item) {
    var len = list.length;

    for (var i = 0; i < len; i++) {
        var keys = Object.keys(list[i]);
        var flg = true;
        for (var j = 0; j < keys.length; j++) {
            var value = list[i][keys[j]];
            if (item[keys[j]] !== value) {
                flg = false;
            }
        }
        if (flg == true) {
            return i;
        }
    }
    return -1;
}

var items = [{ "hello": 'world', "foo": 'bar' }];
var selectedItem = { "hello": 'world', "foo": 'bar' };
alert(items.indexOf(selectedItem));
alert(indexOfExt(items, selectedItem));

The first alert will return -1 (means match not found) & second alert will return 0 (means match found).