如何从对象调用函数，从javascript中同一对象的其他函数的函数中调用函数？

Question

我有一个对象，它简化得有点像：

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打电话给fct2a，怎么打？小提琴

Answer 1

创建一个临时变量并将this对象标记为该变量并从该变量调用。请找到下面的代码

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

您还可以分别声明fct1()并在需要时调用它：

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();