列表列表的Array.indexOf不起作用(Array.indexOf for list of lists is not working)

 我有一个列表来自ajax response的服务器的列表具有以下结构： 
 
var mapping = [     //response.mapping
    ["userOne", 1],
    ["userTwo", 2],
    ["userthree", 3],
    ["userfour", 4],

    ["personOne", 1],
    ["personTwo", 2],
    ["personOne", 3],
];
 
 由于名单将永远保持不变，这将只有7个元素在任何时候。 我想索引它的任何元素来更新一些DOM元素。 
 
// Gives me any of list element which is random elm of the list `mapping`.
var captured_list_elm =  process_mapping_list();     
var status = mapping.indexOf(captured_list_elm);// getting always -1
 
 在这里，我总是得到-1状态。 
 
 
 
 可能是什么原因？ 
 
 
 为什么indexOf无法计算其索引？ 
 
 
 找到它的方法是什么，只通过循环遍历列表来获取索引？ 
 
 
 创建了一个jsFiddle 
 
 注 - 事实上它应该是一个json，但是我们团队中的某个人已经把它写成了一个列表清单。 我现在无法更新它，因为代码正在生产中。 

I have a list of lists which comes from the server in ajax response has following structure:
 
var mapping = [     //response.mapping
    ["userOne", 1],
    ["userTwo", 2],
    ["userthree", 3],
    ["userfour", 4],

    ["personOne", 1],
    ["personTwo", 2],
    ["personOne", 3],
];
 
As the list will be constant forever, which will have only 7 elements at anytime. I want index of any of its element to update some DOM elements.
 
// Gives me any of list element which is random elm of the list `mapping`.
var captured_list_elm =  process_mapping_list();     
var status = mapping.indexOf(captured_list_elm);// getting always -1
 
Here I'm getting always -1 for status.
 
 
 
What could be the reason? 
 
 
Why indexOf can not calculate its index?
 
 
What's the way to find it, get index through looping over list only?
 
 
Created a jsFiddle
 
NOTE - Actually it should be a json but someone out of our team had written it as a list of lists. I can not update it as of now because the code is in production.

原文：https://stackoverflow.com/questions/30520401