从被调用的函数调用一个javascript函数（原函数）？ [英] calling a javascript function (in original function) from called function?

问题描述

无论如何，从另一个函数调用一个函数..有点难以解释。继承人的例子。一个函数加载html页面，并在准备就绪时调用原始函数。

我想我需要传入一个引用，但不确定如何执行此操作...如果我设置了它到这 - 它似乎并没有工作

任何想法？

  order.prototype.printMe = function（）{
 order_resume.loadthis（myTestPage.html，showData）; 
} 
 
 order.prototype.testme = function（）{
 alert（我被称为）; 
} 
 
 //然后在loadthis中需要调用
 
 orderRsume.prototype.loadthis = function（）{
 // DO SOME的东西，负载时其到达OnReady 
} 
 
 order.prototype.OnReady =函数（）{
 ///需要在其他功能$ b CALL ORIGINAL TESTME 
 $ b  

解决方案

我不清楚你真的想做。在JS中，函数是头等对象。因此，您可以将函数作为参数传递给另一个函数：

  Cook（龙虾，
water ，
函数（x）{alert（pot+ x）;}）; 
  

---

  order .somefunc = function（）{
 //做东西
} 
 
 order.anotherone =函数（func）{
 //做东西和调用函数func 
 func（）; 
} 
 
 order.anotherone（order.somefunc）; 
  

---

如果您需要引用未命名的函数它是正文，下面的语法应该可以工作：

  order.recursivefunc = function f（）{
 //你可以使用f仅在此范围内，afaik 
f（）; 
}; 
  

Is there anyway to calling a function from another function .. little hard to explain. heres in example. One function loads html page and when ready it calls the original function.

I think i need to pass in a reference but unsure how to do this... if i set it to "this" - it doesn't seem to work

ANy ideas?

order.prototype.printMe = function(){
    order_resume.loadthis("myTestPage.html", "showData");
}

order.prototype.testme= function(){
     alert("i have been called");
}

//Then when in "loadthis" need to call 

orderRsume.prototype.loadthis= function(){
    //  DO SOME STUFF AND WHEN LOADS IT ARRIVES IN OnReady
}

order.prototype.OnReady= function(){
  /// NEED TO CALL ORIGINAL "testme" in other function
}

解决方案

It's not clear for me what you really want to do. In JS functions are first-class objects. So, you can pass function as a parameter to another function:

Cook("lobster", 
     "water", 
     function(x) { alert("pot " + x); });

---

order.somefunc = function(){
    // do stuff
}

order.anotherone = function(func){
    // do stuff and call function func
    func();
}

order.anotherone(order.somefunc);

---

And if you need to refer to unnamed function from it's body, following syntax should work:

order.recursivefunc = function f(){
    // you can use f only in this scope, afaik
    f();
}; 

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