jquery使用多个规则进行验证

Question

如何在div容器中验证具有三个规则和三个自定义消息的电子邮件地址字段.即.

rules: {
    email: {
        validationRule: true,
        email: true,
        remote: '/ajax/emailDuplicationCheck.php'
       }
     }

如果第一条错误信息应为"验证规则失败"

如果第二个错误(失败)"输入电子邮件地址"

如果第三(远程)失败.消息应为"帐户已存在于数据库中".

我可以为所有规则添加一条消息,但我想根据规则自定义消息.

Answer 1

试试这个:

$("#myForm").validate({ // Replace #myForm with the ID of your form
    rules: {
        email: {
            required: true,
            email: true,
            remote: {
                url: "/ajax/emailDuplicationCheck.php",
                type: "post",
                data: { email: function() {
                    return $("#email").val(); // Add #email ID to your email field
                }
            }
        }
    },
    messages: {
        email: {
            required: 'Email address is required',
            email: 'Please enter a valid email address',
            remote: 'This email address has already been used'
        }
    },
    errorPlacement: function(error) {
        $("#response").html(error);
    }
});

希望这可以帮助 !

Answer 2

您可以为每个规则使用自定义验证规则以及您自己的自定义消息。

为简单起见，下面是如何使用三种自定义验证方法（每种方法都有其自己的错误消息）来验证“用户名”输入的示例：

// Add three custom methods first:

$.validator.addMethod("nameCustom", function(value, element) {
    return this.optional(element) || /^[a-zA-Z ]+/.test(value);
}, 'Please use english letters only.');

$.validator.addMethod("noSpaceStart", function(value, element) { 
    return value.indexOf(" ") != 0; 
}, "Name cannot start with a space");

$.validator.addMethod("noSpaceEnd", function(value, element) { 
    return value.lastIndexOf(" ") != value.length - 1; 
}, "Name cannot end with a space");

$('#form_to_validate').validate({
    rules: {
        username: {
            // Add the custom validation methods to the username input
            noSpaceStart: true,
            noSpaceEnd: true,
            nameCustom: true,
            // required and maxlength are built-in methods in the plugin and are ready to be used
            required: true,
            maxlength: 50
        }
    }
});