eval 如何操作json

Question

var responseData=[
                     {id:1,name:'ha1',title:'title1',total:34},
                     {id:2,name:'ha',title:'title2',total:245},
                     {id:3,name:'ha3',title:'title3',total:700}
                 ];//请求的数据
var colNamesArray=[id","title","total"];//需要显示的列for(var j=0;j<responseData.length;j++)
     {
for(var i=0;i<colNamesArray.length;i++)
 {
   var obj = eval("("+responseData[j]+"."+colNamesArray[i]+")"); //这句老是不对：      
      }
    }
请各位高手 帮帮忙 ！谢谢大家聊

Answer 1

var colNamesArray=[id","title","total"];//需要显示的列
var colNamesArray=["id","title","total"];你的eval()是什么啊
eval("(" + responseData + ")");这样不对吗

Answer 2

var responseData=[
  {id:1,name:'ha1',title:'title1',total:34},
  {id:2,name:'ha',title:'title2',total:245},
  {id:3,name:'ha3',title:'title3',total:700}
  ];
var colNamesArray=["id","title","total"];for(var j=0;j<responseData.length;j++)
  {
for(var i=0;i<colNamesArray.length;i++)
{
alert(responseData[j][colNamesArray[i]]); 
  }
  }
首先， 你返回的是json数组，根本不用eval，
还有就是你的这个地方丢了引号
var colNamesArray=["id","title","total"];//需要显示的列

Answer 3

就是 内循环如何动态访问 jason的数据 就是不知如何访问 我用eval 可能不用eval 吧 ；总之一句如何动态访问 jason中元素

Answer 4

for(var j=0;j<responseData.length;j++)
{
   var id = responseData[j].id;
   //以下相同
}

Answer 5

var tempjson = eval('('+responseData+')');
这样解析成数组,然后循环遍历