javascript - 在javascript中访问父对象

Question

    var user = {
        Name: "Some user",
        Methods: {
            ShowGreetings: function() {
                    // at this point i want to access variable "Name", 
                    //i dont want to use user.Name
                    // **please suggest me how??**
                 },
            GetUserName: function() { }
        }
    }

Answer 1

你不能。

JavaScript 中没有向上关系。

举个例子:

var foo = {
    bar: [1,2,3]
}

var baz = {};
baz.bar = foo.bar;

单个数组对象现在有两个“ parent ”。

你可以做的是:

var User = function User(name) {
    this.name = name;
};

User.prototype = {};
User.prototype.ShowGreetings = function () {
    alert(this.name);
};

var user = new User('For Example');
user.ShowGreetings();