Javascript 数组引用

Question

如果我有以下内容:

{"hdrs": ["Make","Model","Year"],
 "data" : [ 
   {"Make":"Honda","Model":"Accord","Year":"2008"}
   {"Make":"Toyota","Model":"Corolla","Year":"2008"}
   {"Make":"Honda","Model":"Pilot","Year":"2008"}]
}

我有一个“hdrs”名称(即“Make”)，我如何引用 data 数组实例？似乎 data["Make"][0] 应该可以工作...但无法获得正确的引用

编辑

抱歉含糊不清。我可以遍历 hdrs 来获取每个 hdr 名称，但我需要使用 hdrs 的每个实例值来查找所有数据元素在 data 中(不确定这是更好的解释)。我将把它放在变量 t 中，因为它是 JSON(感谢重新标记)我希望能够引用这样的东西:t.data[hdrs[i ]][j]

Answer 1

我不得不稍微修改一下你的代码:

var x = {"hdrs": ["Make","Model","Year"],
         "data" : [ 
           {"Make":"Honda","Model":"Accord","Year":"2008"},
           {"Make":"Toyota","Model":"Corolla","Year":"2008"},
           {"Make":"Honda","Model":"Pilot","Year":"2008"}]
        };

        alert( x.data[0].Make );

编辑:回应您的编辑

var x = {"hdrs": ["Make","Model","Year"],
         "data" : [ 
           {"Make":"Honda","Model":"Accord","Year":"2008"},
           {"Make":"Toyota","Model":"Corolla","Year":"2008"},
           {"Make":"Honda","Model":"Pilot","Year":"2008"}]
        };
var Header = 0; // Make
for( var i = 0; i <= x.data.length - 1; i++ )
{
    alert( x.data[i][x.hdrs[Header]] );
}