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:

https://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