Underscore JS to retrieve object by ID - angularjs

Question

I have a input where I want to find an object by ID. At the moment I am returning both objects but what I want is if I search '01' I would just return the first object. I have tried underscore _.map to do this but it did not give the result I am after.
var getById = function() {
var deferred = Q.defer(),
result;
result = items;
if (!result) {
deferred.reject('item not found');
} else {
deferred.resolve(result);
}
return deferred.promise;
};
JSON:
[{
"id": "01",
"name": "test1",
"orderItems": [
{
"productNumber": "TESTa",
"quantity": 2,
},
{
"productNumber": "TESTb",
"quantity": 4,
},
{
"productNumber": "TESTc",
"quantity": 6,
}
]
},{
"id": "02",
"name": "test2",
"orderItems": [
{
"productNumber": "TESTe",
"quantity": 2,
},
{
"productNumber": "TESTf",
"quantity": 7,
},
{
"productNumber": "TESTg",
"quantity": 6,
}
]
}]

Answer 1

You can use _.filter()
Looks through each value in the list, returning an array of all the values that pass a truth test (predicate).
result = _.filter(items, function(item){
return item.id == '01';
});
Or, _.findWhere
Looks through the list and returns the first value that matches all of the key-value pairs listed in properties.
result = _.findWhere(items, {id : '01'});

Answer 2

var result = _.find(myItems, function(item) { return item.id === '01'; }

Answer 3

If you find single item which matches the conditions, use _.find()
It looks through each value in the list, returning the first one that
passes a truth test
var _exist = _.find(_items, function (item) {
return item.id == your_id;
});
If you find all items which matches the conditions, use _.filter()
It looks through each value in the list, returning an array of all the
values that pass a truth test
var _exist = _.filter(_items, function (item) {
return item.id == your_id;
});
Catch the complete documentation here:
http://underscorejs.org/