原型中对'this'的引用不起作用

Question

var MyClass = function() { 
    //some functionality goes here 
};

MyClass.prototype.xyz = function() { 
    //some functionality goes here 
};

MyClass.prototype.abc = function() {
    var self = this;
    // here self is not working and 'this.xyz()' isn't working too.
    self.xyz();
    // It works if I use MyClass.prototype.xyz();
};

有人可以帮助我在这里失踪吗？

Answer 1

我真的不知道你如何在这里调用你的功能，但这很有效：

var MyClass = function() { 
    console.log("constructor");
};

MyClass.prototype.xyz = function() { 
    console.log("xyz");
};

MyClass.prototype.abc = function() {
    console.log("abc");
    this.xyz();
};

let myClass = new MyClass();

myClass.xyz();
myClass.abc();

，输出很简单：

constructor
xyz
abc
xyz