jQuery validate 设置失去焦点就校验

<script type="text/javascript">
    $(function(){
        var flag = $("#addForm").validate({
            onfocusout: function(element) { $(element).valid(); },
            rules:{
                website:{
                    required:true,
                    minlength:2
                },
                url:{
                    url:true,
                    require:true
                }
            }

        });
    });
</script>