简洁Ajax函数处理(示例代码)

$(._ajax).click(function(){
 _ajax.request(this);
  return false; 
});

var _ajax = {
      request: function(o){
             var tform = $(o).parents(form);
             _ar2(tform,,_ajax._fb_request);
      },
      _fb._request: function(d){
         d = eval(( +unescape(d)+ ));                                                                                                //提交状态提示 。
  if(d.notification){
   if(d.type == ok){
    alert(提交成功);    
   }else if(d.type == error){
    alert(提交失败);                                                                                                      
                 }else{
    alert(错误);
   }
  }
 }
}

// 改进版 _ar
function _ar2(s, target, feedback, param, methods){
 var url, method;
 var params = {};
 if( (s instanceof jQuery) && s.attr("tagName")==VFORM) {
  url  = s.attr(action);
  method = s.attr(method);
  params = param || $(input, textarea, select,s).serialize();
 }else if( (s instanceof jQuery) && s.attr("tagName")==FORM) {
  url  = s.attr(action);
  method = s.attr(method);
  params = param || s.serialize();
 }else if(typeof(s)==string){
  url  = s; // http://...
 }

 url = url || ;
 method = method || methods || GET;
 params = param ? param : params;
 jQuery.ajax({
  type: method,url:url,data:params,
  beforeSend: function(){
   //jQuery.jGrowl(数据读取中 请稍候.., {  header: 提示, theme: blue});
  },
  success: function(data) {
   //data = jQuery.trim(data).replace(/[\n\t\r]/gi,);
   if(feedback){
    eval(feedback+(\+escape(data)+\));
    return;
   }else{
    if(data){
     if(target){
      jQuery(target).html(data);
      jQuery.jGrowl(页面请求完毕., {  header: 提示, theme: green, life: 100});
      return;
     }
    }else{
     lg(no feedback);
     jQuery.jGrowl(服务器无返回信息., {  header: 提示, theme: blue});
     return;
    }
   }
   jQuery.jGrowl(data, {  header: 提示, theme: blue});
  },
  error: function (e){
   var s = e.status;
   switch(s) {
    case 404:
     jQuery.jGrowl(请求的页面无法找到. 请联系系统管理员., {  header: 提示, theme: blue});
    break;
    case 500:
     jQuery.jGrowl(服务器错误[500]. 请联系系统管理员., {  header: 提示, theme: blue});
    break;
    default:
     //log(unknow error);
     lg(s);
     jQuery.jGrowl(未知错误. 请联系系统管理员., {  header: 提示, theme: blue});
   }
  }
 });
}