function isEqual(obj1, obj2) {
    for (var i in obj1) {
        if (obj1.hasOwnProperty(i)) {
            if (obj2[i] !== obj1[i]) {
                return false;
            }
        }
    }
    // No need for any else clause there, since any code after a return statement won't be executed.
    return true;
}

// Console

>>> isEqual({a: 1}, {a : 1})
true
>>> isEqual({}, {})
true
>>> isEqual({a: 1, b: 2}, {b: 2, a: 1})
true