function Serialize(obj){   
  switch(obj.constructor){   
    case Object:   
      var str = "{";   
      for(var o in obj){   
        str += o + ":" + Serialize(obj[o]) +",";   
      }   
      if(str.substr(str.length-1) == ",")   
        str = str.substr(0,str.length -1);   
       return str + "}";   
       break;   
     case Array:         
       var str = "[";   
       for(var o in obj){   
         str += Serialize(obj[o]) +",";   
       }   
       if(str.substr(str.length-1) == ",")   
         str = str.substr(0,str.length -1);   
       return str + "]";   
       break;   
     case Boolean:   
       return "\"" + obj.toString() + "\"";   
       break;   
     case Date:   
       return "\"" + obj.toString() + "\"";   
       break;   
     case Function:   
       break;   
     case Number:   
       return "\"" + obj.toString() + "\"";   
       break;    
     case String:   
       return "\"" + obj.toString() + "\"";   
       break;     
   }   
 }   
var staff_list_obj  ={};  
var staff_id   = 1001;  
staff_list_obj[staff_id]  = {};  
staff_list_obj[staff_id]["姓名"] = '111';  
staff_list_obj[staff_id]["测试"] = '222';  
alert(Serialize(staff_list_obj));

var $ = $ || {};



/** 
 * 将JS对象序列化为JSON字符串 
 * @param {Mixed} o The variable to decode 
 * @return {String} The JSON string 
 * String json = $.encode(o); 
 */ 
$.encode = (function() {
  if ( typeof(JSON)!=='undefined' && typeof(JSON.stringify)!=='undefined') {
    return JSON.stringify;
  }
  var I = !!{}.hasOwnProperty, _ = function(I) {
    return I < 10 "0" + I : I;
  }, A = {
    "\b" : "\\b",
    "\t" : "\\t",
    "\n" : "\\n",
    "\f" : "\\f",
    "\r" : "\\r",
    "\"" : "\\\"",
    "\\" : "\\\\"
  };
  return (function(C) {
    if (typeof C == "undefined" || C === null) {
      return "null";
    } else {
      if (Object.prototype.toString.call(C) === "[object Array]") {
        var B = ["["], G, E, D = C.length, F;
        for (E = 0; E < D; E += 1) {
          F = C[E];
          switch (typeof F) {
            case "undefined" :
            case "function" :
            case "unknown" :
              break;
            default :
              if (G) {
                B.push(",");
              }
              B.push(F === null "null" : $.encode(F));
              G = true;
          }
        }
        B.push("]");
        return B.join("");
      } else {
        if ((Object.prototype.toString.call(C) === "[object Date]")) {
          return "\"" + C.getFullYear() + "-" + _(C.getMonth() + 1) + "-" + _(C.getDate()) + "T" + _(C.getHours()) + ":" + _(C.getMinutes()) + ":" + _(C.getSeconds()) + "\"";
        } else {
          if (typeof C == "string") {
            return "\"" + C.replace(/([\x00-\x1f\\"])/g, function(B, _) {
              var I = A[_];
              if (I) {
                return I;
              }
              return '';
            }).replace(/[^\u0000-\u00FF]/g, function($0) {
              return escape($0).replace(/(%u)(\w{4})/gi, "\\u$2")
            }) + "\"";
          } else {
            if (typeof C == "number") {
              return isFinite(C) "null";
            } else {
              if (typeof C == "boolean") {
                return String(C);
              } else {
                B = ["{"], G, E, F;
                for (E in C) {
                  if (!I || C.hasOwnProperty(E)) {
                    F = C[E];
                    if (F === null) {
                      continue;
                    }
                    switch (typeof F) {
                      case "undefined" :
                      case "function" :
                      case "unknown" :
                        break;
                      default :
                        if (G) {
                          B.push(",");
                        }
                        B.push($.encode(E), ":", $.encode(F));
                        G = true;
                    }
                  }
                }
                B.push("}");
                return B.join("");
              }
            }
          }
        }
      }
    }
  });
})();

var jsonString={....}/[....];
eval("var obj="+jsonString);
alert(obj);

function evalJSON(json){ 
var obj = null; 
try { 
obj = eval("(" + json + ")"); 
} catch(E){} 

return obj ; 
}