jquery 表单验证允许提交表单，即使有错误

Question

使用jquery验证插件，如果我第一次提交表单出现错误，那么它将不允许表单提交并显示错误。但是，如果我只修复一个表单元素错误而其他元素仍然无效，则表单将提交到表单操作 URL。

除非用户修复了所有错误，否则我希望表单不要提交。我试图在提交处理程序中返回 false 但徒劳。

jQuery(function ($) {
    $('#regform').validate({
        rules: {
            fullname: {
                required: true,
                minlength: 2,
                maxlength: 20,
                lettersonly: true
            },
            gender: {
                required: true
            },
            mobile: {
                required: true,
                minlength: 10,
                maxlength: 13,
                digits: true
            },
            address: {
                required: true,
                minlength: 10,
            },
            email: {
                required: true,
                email: true
            },
            password: {
                required: true,
                minlength: 6

            }
        },
        messages: {
            fullname: {
                required: "Please enter your full name",
                minlength: "Name should be more than 2 characters",
                maxlength: "Name should be less than 20 characters",
                lettersonly: "Name should contain only letters"
            },
            gender: {
                required: "Please select your gender",
            },
            mobile: {
                required: "Please enter your mobile number",
                minlength: "Mobile number should be more than 10 characters",
                maxlength: "Mobile number should be less than 13 characters",
                digits: "Mobile number should contain only digits"
            },
            address: {
                required: "Please enter your address",
                minlength: "Address should be more than 10 characters",
            },
            email: {
                required: "Please enter your email address",
                email: "Please enter a valid email address"
            },
            password: {
                required: "Please provide a password",
                minlength: "password must be at least 6 characters"
            }
        },
        submitHandler: function(form) {
            var valid = $("regform").valid();
            if(!valid) {
                e.preventDefault();
                alert("stop");
            } else {
                e.preventDefault();
            }

        }
    });
});

Answer 1

使用类似的设置，但字段较少 - https://codepen.io/jefftimbre/pen/xWjQrX?editors=1010

lettersonly 方法可能已被删除或弃用。将以下内容添加到您的代码中，它应该可以工作。让我知道。

$.validator.addMethod( "lettersonly", function( value, element ) {
    return this.optional( element ) || /^[a-z]+$/i.test( value );
}, "Letters only please" );