在JavaScript中的另一个内部调用一个原型方法 [英] Calling one prototype method inside another in javascript

问题描述

var Ob = function(){


}

Ob.prototype.add = function(){
    inc()

}

Ob.prototype.inc = function(){
    alert(' Inc called ');

}

window.onload = function(){
var o = new Ob();
o.add();
}

我想调用这样的东西，我该怎么称呼，当然我将 inc 作为内部函数添加到 add 中，我可以这样做但没有内部函数.我该怎么办?

I would like to call something like this,how can i call, ofcourse i put inc as inner function to add I can do that but without having the inner function. how do i do that ?

推荐答案

很简单:

Ob.prototype.add = function(){
    this.inc()
}

Ob.prototype.inc = function(){
    alert(' Inc called ');
}

创建Ob的实例时，会将原型中的属性复制到该对象.如果要从实例的另一个方法中访问实例的方法，则可以使用this.

When you create the instance of Ob properties from prototype are copied to the object. If you want to access the methods of instance from within its another method you could use this.

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