Merge two arrays matching an id

Question

I have two arrays like

var members = [{docId: \"1234\", userId: 222}, {docId: \"1235\", userId: 333}];
var memberInfo = [{id: 222, name: \"test1\"}, {id: 333         


        

Answer 1

var members = [{
    docId: "1234",
    userId: 222
}, {
    docId: "1235",
    userId: 333
}];
var memberInfo = [{
    id: 222,
    name: "test1"
}, {
    id: 333,
    name: "test2"
}];
var finalArray = [];

_.each(memberInfo, function (item) {
    finalArray.push(_.each(_.where(members, {
        userId: item.id
    }),

    function (element) {
        element.name = item.name
    }));
});

console.log(finalArray);

Fiddle example