Merge one or more objects

Object.merge.js

Object.merge = function() {
    var al = arguments.length;
    var result;

    if (al < 2) {
        throw new Error('U need at least 2 objects to merge');
    }

    result = arguments[0];

    for (var i = 1; --al; ++i) {
        var current = arguments[i];

        Object.keys(current).map(function(key) {
            result[key] = current[key];
        });
    }

    return result;
};

output

{
    "name": "karl",
    "age": "25i",
    "address": "long island",
    "blood type": "AB",
    "phones": [
        {
            "phoneNumer": "20103040",
            "phoneType": "work"
        },
        {
            "phoneNumer": "20103159",
            "phoneType": "work"
        },
        {
            "phoneNumer": "20133712",
            "phoneType": "home"
        }
    ],
    "emails": [
        {
            "emailAdress": "[email protected]",
            "phoneType": "personal"
        },
        {
            "phoneNumer": "[email protected]",
            "phoneType": "work"
        }
    ]
}

sample.js

var first = {"person":{"name":"karl","age":"25i","address":"long island","blood type":"AB"}};
var second = {
    "phones": [
        {"phoneNumer":"20103040","phoneType":"work"},
        {"phoneNumer":"20103159","phoneType":"work"},
        {"phoneNumer":"20133712","phoneType":"home"}
    ],
    "emails": [
        {"emailAdress":"[email protected]","phoneType":"personal"},
        {"phoneNumer":"[email protected]","phoneType":"work"}
    ]
};

print(JSON.stringify(Object.merge(first.person, second)));