var str = '[{"uname":"王强","day":"2010/06/17"},{"uname":"王海云","day":"2010/06/11"}]';  

 for(var i=0;i<jsonList.length;i++){ 

  　　　　for(var key in jsonList[i]){

          　　alert("key："+key+",value："+jsonList[i][key]); 

         } 

  　　}

 var mapColumn = {

              "vdoing" : "访问深度",

              "_visitorNumber": "访问量",

              "_pageViews": "浏览量",

              "_jumpOutRate": "跳出率",

              "_avgAccessTime": "平均访问时长",

              "_allTargetConvRate": "转化率",

              "_orderTotalPrice": "总收益"

          };

  var target=[];

  for (var key in mapColumn) {

              target.push(key);

          }

1 function text(){

   var json = {"options":"[{\"text\":\"王家湾\",\"value\":\"9\"},{\"text\":\"李家湾\",\"value\":\"10\"},{\"text\":\"邵家湾\",\"value\":\"13\"}]"}

  json = eval(json.options)

  for(var i=0; i<json.length; i++)

   {

      alert(json[i].text+" " + json[i].value)

   }

 }