Merge objects in array based on property

Question

I have an array like so which i am trying to merge so any object that has the name property the same will after the merge contain a list of merged objects

va         


        

Answer 1

Using reduce:

var merged = array.reduce(function(list, obj) {
    var found = false;
    for (var i = 0; i < list.length; i++) {
        if (list[i].name == obj.name) {
            list[i].myList = list[i].myList.concat(obj.myList);
            found = true;
            break;
        }
    }

    if (!found) {
        list.push(obj);
    }

    return list;
}, []);