Question

我有一个对象，它有点简化：

function obj(arg){
    return{
        fct1: function(){
            $(".output").append("called fct1 with arg: "+arg+"<br>");
        },
        fct2: function(){
            $(".output").append("called fct2, which has an other function, which calls fct1<br>");
            fct2a();
            function fct2a(){
                $(".output").append("doing something else, then calling fct1<br>");
                this.fct1(); //not within scope
            }
        }
        }
    }
var myobj = obj("asd");
myobj.fct2();

我想从fct2a调用fct1，怎么样？ Fiddle

Answer 1

为该var创建一个temp var和asign this对象并从中调用。请找到以下代码

function obj(arg){
    return{
        var temp=this;
        fct1: function(){
            $(".output").append("called fct1 with arg: "+arg+"<br>");
        },
        fct2: function(){
            $(".output").append("called fct2, which has an other function, which calls fct1<br>");
            fct2a();
            function fct2a(){
                $(".output").append("doing something else, then calling fct1<br>");
                temp.fct1(); 
            }
        }
        }
    }
var myobj = obj("asd");
myobj.fct2();

Answer 2

您也可以单独声明fct1()并在需要的地方调用它：

function obj(arg){
    function innerFct1(arg) {
        $(".output").append("called fct1 with arg: "+arg+"<br>");
    }
    return{
        fct1: innerFct1,
        fct2: function(){
            $(".output").append("called fct2, which has an other function, which calls fct1<br>");
            fct2a();
            function fct2a(){
                $(".output").append("doing something else, then calling fct1<br>");
                innerFct1("arg2"); //not within scope
            }
        }
    }
}
var myobj = obj("asd");
myobj.fct2();

如何从一个对象中调用一个函数，从javascript中同一个对象的其他函数函数中调用？

2 个答案: