试图调用三种方法，但无法与jQuery map一起正常使用 [英] trying to `call` three methods but not working correctly with jQuery map

问题描述

更新#1
我忘了将当前对象作为第一个参数传递.看到K的答案

Update #1
I forgot to pass the current object as the first paremeter; see K's answer

我在Google地图上有以下方法.这些方法可以像这样正常工作:

I have the following methods that are on a google maps. The methods work fine like this:

arc.pLocations(ne, sw,m);
arc.pLikedLocations(ne, sw, m);
arc.pLikedItems(ne, sw, m);

但是，我希望将它们放置在这样的数组中，我可以对其进行子调用，但这是行不通的(我将是第一个承认这是我的问题):

However, I'd like to have them in an array like this that I can subsequetnly call but this isn't working (I'd be the first acknowledge this is an issue with me):

var selected_methods=[arc.pLocations,arc.pLikedLocations,arc.pLikedItems];

// Uncaught TypeError: Object #<Ri> has no method 'lng'  - this is for a variable called sw in pLikedLocations 
$.map(selected_methods, function(val, i){
    console.log("here is index:" + i);
    val.call(ne,sw,m);
});

试图用另一个闭包包装它，但这也不起作用

trying to wrap this with another closure but this also isn't working

$.map(selected_methods, (function(val, i){
  console.log("here is index:" + i);
  val.call(ne,sw,m);
})(val,i)); // Uncaught ReferenceError: val is not defined on this line!

以下是我正在做的一些非常简单的错误.谁能发现问题并为我提供帮助?这是星期六晚上，我想解决这个问题.

I have the following I'm doing something really simple wrong. Can anyone spot the issue and help me? It's saturday nigth and I want to be done with this.

提前谢谢

推荐答案

您正在将错误的上下文传递给call函数.实际上，您会错过它.试试这个:

You're passing the wrong context to the call function. Actually, you miss it. Try this:

var selected_methods=[arc.pLocations,arc.pLikedLocations,arc.pLikedItems];

$.map(selected_methods, function(val, i){
    console.log("here is index:" + i);
    val.call(arc,ne,sw,m); //Notice the arc
});

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