如何在 JavaScript 中创建键/值对列表

Question

我有一个数组中的股票列表。每个 Stock 属于一个 Sector ，例如

CBB , VZ belongs to Communications Sector 
UPS , RRTS belongs to Transportation Sector 
AAC belongs to Health  Sector 

当我遍历数组时，输出是

CBB
VZ
UPS
RRTS
AAC 

我需要以这种方式显示它

CBB  Communications
VZ   Communications
UPS  Transportation
RRTS Transportation
AAC   Health

我的代码

$(document).ready(function() {
   var list_of_stocks= [
    "CBB",
    "VZ",
    "UPS",
    "RRTS",
    "AAC "
]

for(var i=0;i<list_of_stocks.length;i++)
{
console.log(list_of_stocks[i]);
}

});

http://jsfiddle.net/n3fmw1mw/202/上面的代码

如何维护另一个键值对列表结构以有效地实现这一点

（我不想修改数组 list_of_stocks ），所以想创建另一个键值对 list 。谢谢您阅读此篇

Answer 1

您可以使用 javascript 对象：

var list_of_stocks= {
  "CBB": "Communications",
  "VZ": "Communications",
  "UPS": "Transportation",
  "RRTS": "Transportation",
  "AAC": "Heath"
};
for (var key in list_of_stocks) {
  if (list_of_stocks.hasOwnProperty(key)) {
    console.log(key + " -> " + list_of_stocks[key]);
  }
}

见http://jsfiddle.net/n3fmw1mw/204/