清空之前驗證錯誤的訊息

$.fn.clearValidation = function () {
    var validator = $(this).validate();
    $('[name]', this).each(function () {
        validator.successList.push(this);
        validator.showErrors();
    });

    validator.resetForm();
    validator.reset();
};

移除之前的驗證結果

$("#my-phone-number-element").removeData("previousValue");
$("#my-phone-number-element").valid();

移至錯誤的欄位

$("#form").validate({
    onfocusout: false,
    invalidHandler: function(form, validator) {
        var errors = validator.numberOfInvalids();
        if (errors) {                    
            validator.errorList[0].element.focus();
        }
    } 
});

參考連結

• How to focus invalid fields with jQuery validate?