我试图通过返回外部函数在初始化时调用javascript对象外部的另一个函数

为什么这不起作用？我试图调用内部函数“refreshPage”

这将起作用：

var myFunc = function(){

  var refreshPage = function(){
    alert("hello");
  };

  return { 
    refreshPage: refreshPage
  };

}();

function refreshPage(){
  return myFunc.refreshPage(); 
}
refreshPage();

我认为如果我们重新命名和重新定位一些东西，问题会更清楚

/* sayHello will be a function: */
function sayHello() {
    alert("hello");
}
/* makeObjectWithMethod will be a function: */
function makeObjectWithMethod() {
    /* equivalently, assign sayHello to the variable refreshPage, but don't invoke */
    var refreshPage = sayHello;
    /* return an *object* with a property, refreshPage, whose value is the function */
    /* sayHello - not the value it returns, but the function itself. */
    return {
        refreshPage: refreshPage
    };
}
/* make a variable called myFunc whose value is the object returned by above */
var myFunc = makeObjectWithMethod();
/* make a method called finallyReallyDoIt that *when invoked*, calls a method */
/* of myFunc named refreshPage */
function finallyReallyDoIt() {
    return myFunc.refreshPage();
}

---

如果您从未调用

finallyReallyDoIt

，您所做的就是创建

myFunc

对象并将

finallyReallyDoIt

声明为函数。就像上面的

sayHello

和

makeObjectWithMethod

一样，

finallyReallyDoIt

在调用它之前不会发生。

您需要调用

refreshPage（）我也使用返回{refreshPage:refreshPage}；为什么这不起作用？但是您正在一个未调用的函数
refreshPage
中调用它。我想，添加空括号就是调用它。谢谢。现在更有意义了。
/* sayHello will be a function: */
function sayHello() {
    alert("hello");
}
/* makeObjectWithMethod will be a function: */
function makeObjectWithMethod() {
    /* equivalently, assign sayHello to the variable refreshPage, but don't invoke */
    var refreshPage = sayHello;
    /* return an *object* with a property, refreshPage, whose value is the function */
    /* sayHello - not the value it returns, but the function itself. */
    return {
        refreshPage: refreshPage
    };
}
/* make a variable called myFunc whose value is the object returned by above */
var myFunc = makeObjectWithMethod();
/* make a method called finallyReallyDoIt that *when invoked*, calls a method */
/* of myFunc named refreshPage */
function finallyReallyDoIt() {
    return myFunc.refreshPage();
}