how to merge 2 object array by the same key with lodash
Lodash var a = [ { userId:"p1", item:1}, { userId:"p2", item:2}, { userId:"p3", item:4} ]; var b = [ { userId:"p1", profile:1}, { userId:"p2", profile:2}, { userId:"p4", profile:4} ]; var merged = _.merge(_.keyBy(a, 'userId'), _.keyBy(b, 'userId')); var values = _.values(merged); console.log(values); <script src="https://cdnjs.cloudflare.com/ajax/libs/