获取json数据中所有key集合

 

/**
 * 获取json数据中所有key
*/
function fetchResponseInfo(responseInfo){

//判断是否为空
if((!responseInfo || responseInfo.length <= 0))    {
return;
    }

//获取model
var jsonCon = jQuery.parseJSON(responseInfo).model;
if(!jsonCon){
return;
    }

//获取所有key
var keyArr;
if(jsonCon instanceof Array){
//1-JSONArray
if(jsonCon.length <= 0){
return;
       }
var arrOb = jsonCon[0];
       keyArr = Object.keys(arrOb);
    }else if(jsonCon instanceof Object){
//2-JSONObject
       keyArr = Object.keys(jsonCon);
    }else{
//3-Other
return;
    }
if(!keyArr || keyArr.length <= 0){
return;
    }

//组装数组
var temOb;
var lang = "java.lang.String";
var description = "";
var resArr = new Array();
for(i = 0; i < keyArr.length; i ++){
       temOb = new Object();
       temOb.param = keyArr[i];
       temOb.lang = lang;
       temOb.description = description;
       resArr[i] = temOb;
    }
return resArr;

}