Javascript 将参数传递给嵌套函数

Javascript 将参数传递给嵌套函数,javascript,Javascript,这是我的代码: var Placemat = function(id,id2) { this.hand = document.getElementById(id); this.bucket = ""; this.bucketspace = document.getElementById(id2); this.bucketvalue = 0; var that = this; this.deal = function(id) { sh

这是我的代码:

var Placemat = function(id,id2) {
    this.hand = document.getElementById(id);
    this.bucket = "";
    this.bucketspace = document.getElementById(id2);
    this.bucketvalue = 0;
    var that = this;
    this.deal = function(id) {
        shuffle();
        var card1 = deck.shift();
        var card2 = deck.shift();
        this.hand.innerHTML = card1 + ", " + card2;
    };
    this.hit = function(id2) {
        var card3 = deck.shift();
        this.bucket = this.bucket + deck.shift();
        this.bucketspace.innerHTML = this.bucket; 
    };
};

这是向嵌套函数传递参数的正确方法吗?
This.deal()
This.hit()
中的
id
id2
来自
Placemat()

否,如果要使用发送到
Placemat()
的值,需要在
deal()
hit()
函数中引用它们。不要将它们列为这些函数的参数

 // removed---------v
this.deal = function() {
    alert( id );  // <---- do something with the original argument
    shuffle();
    var card1 = deck.shift();
    var card2 = deck.shift();
    this.hand.innerHTML = card1 + ", " + card2;
};

 // removed--------v
this.hit = function() {
    alert( id2 );  // <---- do something with the original argument
    var card3 = deck.shift();
    this.bucket = this.bucket + deck.shift();
    this.bucketspace.innerHTML = this.bucket; 
};
//已删除--------v
this.deal=函数(){

警报(id);//否。事实上,您首先传递的id是什么?在函数中不使用它们

 // removed---------v
this.deal = function() {
    alert( id );  // <---- do something with the original argument
    shuffle();
    var card1 = deck.shift();
    var card2 = deck.shift();
    this.hand.innerHTML = card1 + ", " + card2;
};

 // removed--------v
this.hit = function() {
    alert( id2 );  // <---- do something with the original argument
    var card3 = deck.shift();
    this.bucket = this.bucket + deck.shift();
    this.bucketspace.innerHTML = this.bucket; 
};

按照这种方式,您正在创建两个函数(
hit
deal
),每个函数都需要一个参数。这些参数恰好与外部函数的参数命名相同。

我看不出这些参数的作用是什么?