求助，javascript中怎么接收一个类

Question

在action中 用request.setAttribute("st", msgDAO.findAll());把
所有记录都放到st 中， javascript中怎么接收一个类，把里面的对象列出来 
在页面怎么用function Pview(st) {
alert(st);  //在这里把所有记录弹出来
};

Answer 1

+1下面是通用的Object转换成json的JS代码 
//用法 
//var   obj=new   Object(); 
//obj.Name= 'Nams '; 
//obj.Sex=1; 
//JSON.serialize(obj);//will   get:   {Name: 'Nams ',Sex:1} if(typeof   StringBuilder== 'undefined '){ 
        StringBuilder=function(initialText) 
        { 
          var   _parts   =   new   Array();                 
                  if   ((typeof(initialText)   ==   'string ') 
                    &&(initialText.length   !=   0)) 
                    _parts.push(initialText); 
              
                this.append   =   function(text)   { 
                if   ((text   ==   null)   ||   (typeof(text)   ==   'undefined '))   { 
                                return; 
                        } 
                        if   ((typeof(text)   ==   'string ')   &&   (text.length   ==   0))   { 
                                return; 
                        }                         
                        _parts.push(text); 
                } 
                this.appendLine   =   function(text)   { 
                        this.append(text); 
                        _parts.push( '\r\n '); 
                } 
                this.clear   =   function()   { 
                        _parts.clear(); 
                } 
                  this.isEmpty   =   function()   { 
                        return   (_parts.length   ==   0); 
                  } 
                this.toString   =   function(delimiter)   { 
                        return   _parts.join(delimiter   ||   ' '); 
                  } 
        } 
} 
JSON   =   new   function()   {         function   serializeWithBuilder(object,   stringBuilder)   { 
                var   i; 
                
                switch   (typeof   object)   { 
                case   'object ': 
                        if   (object)   { 
                                        if   (object.join)   {//if   is   array,   you   can   using   another   method   implement 
                                        stringBuilder.append( '[ '); 
                                        for   (i   =   0;   i   <   object.length;   ++i)   { 
                                                if   (i   >   0)   { 
                                                        stringBuilder.append( ', '); 
                                                } 
                                                stringBuilder.append(serializeWithBuilder(object[i],   stringBuilder)); 
                                        } 
                                        stringBuilder.append( '] '); 
                                  }   
                                        else   { 
                                                if   (typeof   object.serialize   ==   'function ')   { 
                                                stringBuilder.append(object.serialize()); 
                                                break; 
                                        }                                 
                                        stringBuilder.append( '{ '); 
                                        var   needComma   =   false; 
                                        for   (var   name   in   object)   { 
                                              if   (name.startsWith( '$ '))   { 
                                                        continue; 
                                                } 
                                                var   value   =   object[name]; 
                                                if   (typeof   value   !=   'undefined '   &&   typeof   value   !=   'function ')   { 
                                                        if   (needComma)   
      stringBuilder.append( ', ');                                                         
                                                        else   
      needComma   =   true; 
                                                                                  
                                                        stringBuilder.append(serializeWithBuilder(name,   stringBuilder)); 
                                                        stringBuilder.append( ': '); 
                                                        stringBuilder.append(serializeWithBuilder(value,   stringBuilder)); 
                                                } 
                                        } 
                                        stringBuilder.append( '} '); 
                                } 
                        } 
                        else   { 
                                stringBuilder.append( 'null '); 
                        } 
                        break; 
                        
                case   'number ': 
                        if   (isFinite(object))   { 
                                stringBuilder.append(String(object)); 
                        } 
                        else   { 
                                stringBuilder.append( 'null '); 
                        } 
                        break; 
                        
                case   'string ': 
                        stringBuilder.append( ' " '); 
                        var   length   =   object.length; 
                        for   (i   =   0;   i   <   length;   ++i)   { 
                                var   curChar   =   object.charAt(i); 
                                if   (curChar   > =   '   ')   { 
                                      if   (curChar   ==   '\\ '   ||   curChar   ==   ' " ')   { 
                                            stringBuilder.append( '\\ '); 
                                        } 
                                        stringBuilder.append(curChar); 
                                } 
                                else   { 
                                      switch   (curChar)   { 
                                                case   '\b ': 
                                                        stringBuilder.append( '\\b '); 
                                                        break; 
                                                case   '\f ': 
                                                        stringBuilder.append( '\\f '); 
                                                        break; 
                                                case   '\n ': 
                                                        stringBuilder.append( '\\n '); 
                                                        break; 
                                                case   '\r ': 
                                                        stringBuilder.append( '\\r '); 
                                                        break; 
                                                case   '\t ': 
                                                        stringBuilder.append( '\\t '); 
                                                        break; 
                                                default: 
                                                        stringBuilder.append( '\\u00 '); 
                                                        stringBuilder.append(curChar.charCodeAt().toString(16)); 
                                        } 
                                } 
                        } 
                        stringBuilder.append( ' " '); 
                        break; 
  
                case   'boolean ': 
                        stringBuilder.append(object.toString()); 
                        break; 
  
                default: 
                        stringBuilder.append( 'null '); 
                        break; 
                } 
        }         this.serialize   =   function(object)   {   
                var   stringBuilder   =   new   StringBuilder(); 
                serializeWithBuilder(object,   stringBuilder); 
                return   stringBuilder.toString(); 
        }         this.deserialize   =   function(data)   { 
                return   eval( '( '   +   data   +   ') '); 
        } 
}  本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/lee576/archive/2008/04/06/2255091.aspx

Answer 2

如果不用JSON或JSONP。那么直接做字符串处理。然后JS里 eval(str);处理应该也是可以的。

Answer 3

楼主的问题5#已经完全解答了详细部分！但是楼主说的类说得不够明确！定义上JAVASCRIPT里根本没有类的概念！只能模仿而已。这点你却忽略了。你说具体某个对象也许还更明确一些！

Answer 4

实际上你只能传数据，而且还只能是字串数据，无论用哪种形式组织，包括JSON也是。

Answer 5

处理json数据推荐json2.js,比较标准var JsonString = JSON.stringify(jsonObject);
var JsonObject = JSON.parse(JsonString);