How to use underscore's “intersection” on objects?

Question

_.intersection([], [])

only works with primitive types, right?

It doesn\'t work with objects. How can I make it work with objects (maybe b

Answer 1

In lodash 4.0.0. We can try like this

var a = [ {'id': 1, 'name': 'jake' }, {'id':4, 'name': 'jenny'} ];
var b = [ {'id': 1, 'name': 'jake' }, {'id': 9, 'name': 'nick'} ];

_.intersectionBy(a, b, 'id');

Output:

[ {'id': 1, 'name': 'jake' } ];