jquery.validate 1.7版本(remote方法)bug修复方法(一)

       前一段时间使用jquery.validate时遇到一个棘手的问题. 在使用remote验证规则jquery.validate 不能正常工作. 以下是测试脚本:

< script >
        $( function  (){
            $( " #form1 " ).validate({
                rules:{
                    txt1:{
                        remote:{
                            url:"http:" // www.cnblogs.com/a_bu/admin/%22Handler2.ashx
                            ,type: " post "
                            ,data:{ " key " : " ss " }
                            ,error: function  (a,s,d){
                                alert(s  +   "   "   +  d);
                            }
                        }
                    }
                }
                ,messages:{
                    txt1:{
                        remote: " 位空 "
                    }
                }
                
                
            })
        })
     < / script>

        猜测可能是兼容问题,于是分别用jquery 1.44版与 jquery 1.51版做测试，其结果基本一致,分别提示:"error undeined"与"parsererror jQuery15109425226654151397_1299202557390 was not called".

        使用fiddler检测,服务端响应结果正常.因此排除了服务端因素。所以问题可能出现在jquery.validate插件本身上。之后在google中搜到一种解决方案.https://github.com/bigfix/jquery-validation/commit/9aa53f9241224ba349f9fe1b2c801be0f431b63b#undefined ,使用该替代方案后remote验证工作正常.

   从1087行截止1100行源码:

//源文件 1087 行左右

var  ajax  =  $.ajax;
     var  pendingRequests  =  {};
    $.ajax  =   function (settings) {
         //  create settings for compatibility with ajaxSetup
        settings  =  $.extend(settings, $.extend({}, $.ajaxSettings, settings));
         var  port  =  settings.port;
         if  (settings.mode  ==   " abort " ) {
             if  ( pendingRequests[port] ) {
                pendingRequests[port].abort();
            }
             return  (pendingRequests[port]  =  ajax.apply( this , arguments));
        }
         return  ajax.apply( this , arguments);
    };

 //1100行

 替换为:

  var  pendingRequests  =  {};
   if  ($.ajaxPrefilter) {
    $.ajaxPrefilter( function  (settings, original, jqXHR) {
       var  port  =  settings.port;
       if  (settings.mode  ==   " abort " ) {
         if  ( pendingRequests[port] ) {
          pendingRequests[port].abort();
        }
        pendingRequests[port]  =  jqXHR;
      }
    });
  }  else  {
     var  ajax  =  $.ajax;
    $.ajax  =   function (settings) {
       //  create settings for compatibility with ajaxSetup
      settings  =  $.extend(settings, $.extend({}, $.ajaxSettings, settings));
       var  port  =  settings.port;
       if  (settings.mode  ==   " abort " ) {
         if  ( pendingRequests[port] ) {
          pendingRequests[port].abort();
        }
         return  (pendingRequests[port]  =  ajax.apply( this , arguments));
      }
       return  ajax.apply( this , arguments);
    };
  }

remote验证测试例子:

http://files.cnblogs.com/a_bu/validate.test.zip

 另一个修复方法:http://www.cnblogs.com/a_bu/archive/2011/03/06/1972202.html