这个问题 折腾我一天了。 网上也找不到答案,基本都是问题已经解决就无下文了,也没有分享问题解决方法 。

后来查到juqery.validate.js中发现elements方法中$([]).add(this.currentForm.elements)方法在ie8下有问题,只能得到一个jquery对象。(ie9和火狐浏览器正常)

后来根据源码中的注释提示在网站 http://bugs.jquery.com/ticket/2114 得到答案 :

原文:

I had an issue where jquery.validate was failing in IE6, caused by the above error. I fixed this by updating line 446 and changed:

$([]).add(this.currentForm.elements).filter(":input")

to

$(':input',this.currentForm)

于是把juqery.validate.js中elements方法

   return $([]).add(this.currentForm.elements)
   .filter(":input")
   .not(":submit, :reset, :p_w_picpath, [disabled]")
   .not( this.settings.ignore )
   .filter(function() {
    !this.name && validator.settings.debug && window.console && console.error( "%o has no name assigned", this);
   
    // select only the first element for each name, and only those with rules specified
    if ( this.name in rulesCache || !validator.objectLength($(this).rules()) )
     return false;
    
    rulesCache[this.name] = true;
    return true;
   });

修改为:

   return $(':input',this.currentForm) 
   .not(":submit, :reset, :p_w_picpath, [disabled]")
   .not( this.settings.ignore )
   .filter(function() {
    !this.name && validator.settings.debug && window.console && console.error( "%o has no name assigned", this);
   
    // select only the first element for each name, and only those with rules specified
    if ( this.name in rulesCache || !validator.objectLength($(this).rules()) )
     return false;
    
    rulesCache[this.name] = true;
    return true;
   });

问题暂时解决。不知道还是否留下其他问题或者引起其他错误。