javascript - 将属于对象的匿名方法作为参数传递 - Javascript

Question

我有一个带有方法的对象，我想将该方法作为参数传递给另一个函数。但是，该函数必须知道与该方法关联的对象(否则它无法访问创建后分配给该对象的值)。

有没有办法不用将对象/方法作为字符串传递？
(例如不使用:window[function_name];)

function My_Object(name){
    this.name = name;
}

My_Object.prototype.My_Method = function(){
     alert(this.name);
}

//This is the function that passes the method
function Runner(){
     var NewObject = new My_Object('Andre');
     test(NewObject.My_Method);//this is where it should break
}

//This is the function that receives and calls the Object's method
function test(func){
    func();
}

Answer 1

使用匿名函数:

//This is the function that passes the method
function Runner(){
     var NewObject = new My_Object('Andre');
     test(function() {
         NewObject.My_Method();
     });
}

或像这样将您的方法绑定(bind)到NewObject:

//This is the function that passes the method
function Runner(){
     var NewObject = new My_Object('Andre');
     test(NewObject.My_Method.bind(NewObject));
}

并且如果您以后不更改test 函数，您可以在Runner 函数中简单地调用要测试的函数:

//This is the function that passes the method
function Runner(){
     var NewObject = new My_Object('Andre');
     NewObject.My_Method(); // directly call the function
}