js Object2String方便查看js对象内容

<script type="text/javascript">  /**   * 将JS的任意对象输出为json格式字符串   * @param {Object} _obj: 需要输出为string的对象   */  var obj2String = function(_obj) {    var t = typeof (_obj);    if (t != 'object' || _obj === null) {      // simple data type      if (t == 'string') {        _obj = '"' + _obj + '"';      }      return String(_obj);    } else {      if ( _obj instanceof Date) {        return _obj.toLocaleString();      }      // recurse array or object      var n, v, json = [], arr = (_obj && _obj.constructor == Array);      for (n in _obj) {        v = _obj[n];        t = typeof (v);        if (t == 'string') {          v = '"' + v + '"';        } else if (t == "object" && v !== null) {          v = this.obj2String(v);        }        json.push(( arr ? '' : '"' + n + '":') + String(v));      }      return ( arr ? '[' : '{') + String(json) + ( arr ? ']' : '}');    }  };  var obj = {    "result" : {      "fs" : {        "TSP.IBR.MIRROR" : [{          "_value" : "1.0",          "_class" : 4        }],        "TSP.IBR.GET_FNAMES" : [{          "_value" : "0.0",          "_class" : 4        }],        "TSP.IBR.GET_TOKEN_ID" : [{          "_value" : "0.0",          "_class" : 4        }],        "TSP.IBR.INFO" : [{          "_value" : "0.0",          "_class" : 4        }]      }    },    "isCanceled" : false,    "e" : "",    "isResponsed" : true,    "aoqSize" : 0,    "isAsyncPost" : false,    "code" : 0,    "reqUID" : "xxxx-xxxxxx-xxxxx-6c2f17bb-ea18-42ec-98fa-3f63b8d26aba-nd-rq",    "version" : "1.0",    "fName" : "TSP.IBR.GET_FNAMES",    "message" : "成功获取 4 个功能",    "dir" : "DOWN",    "nodeTime" : 1362462128706,    "isKeyCompressed" : false,    "seq" : 2  }  alert(obj2String(obj))</script>