渴望验证的jQuery验证插件

Question

我想使用jQuery Validate插件实时（输入）验证表单。我的其余代码工作正常，但是应该使它们验证实时的onfocusout和onkeyup回调函数无法正常工作。是在错误的地方还是什么地方？

这是我当前验证功能的一个示例：

$(document).ready(function(){

  $(function () {
       //$('input').on('change', function(){
    $("form[name='valid']").validate({  
       rules: {
           name: "required",
           subject: "required", 
           phone: "required",
           email: {
               required: true,
               //built in email validation
               email: true
           }
       },    
       messages: {
           name: "Must enter full name. ",
           subject: "Must enter subject. ",
           phone: "Must enter phone number. ",
           email: "Must enter valid email address."
       },
       //real time validation
       onfocusout: function(element) {
            this.element(element); // triggers validation
       },
       onkeyup: function(element, event) {
            this.element(element); // triggers validation
       },
       errorPlacement: function (error, element) {
            error.appendTo(element.parent());
       },  
       submitHandler: function(form) {
           form.submit();
       }

    });
  });
});