因为我们已经使用了JQuery，我们可以让页面设计者在标记中添加自定义消息，而不是代码:

<input ... data-msg-required="my message" ...

或者，更通用的解决方案是在所有字段上使用一个简短的data-msg属性:

<form id="form1">
    <input type="text" id="firstName" name="firstName" 
        data-msg="Please enter your first name" />
    <br />
    <input type="text" id="lastName" name="lastName" 
        data-msg="Please enter your last name" />
    <br />
    <input type="submit" />
</form>

然后代码包含如下内容:

function getMsg(selector) {
    return $(selector).attr('data-msg');
}

$('#form1').validate({
    // ...
    messages: {
        firstName: getMsg('#firstName'),
        lastName: getMsg('#lastName')
    }
    // ...
});

$(function() {

$("#username_error_message").hide();
$("#password_error_message").hide();
$("#retype_password_error_message").hide();
$("#email_error_message").hide();

var error_username = false;
var error_password = false;
var error_retype_password = false;
var error_email = false;

$("#form_username").focusout(function() {

    check_username();
    
});

$("#form_password").focusout(function() {

    check_password();
    
});

$("#form_retype_password").focusout(function() {

    check_retype_password();
    
});

$("#form_email").focusout(function() {

    check_email();
    
});

function check_username() {

    var username_length = $("#form_username").val().length;
    
    if(username_length < 5 || username_length > 20) {
        $("#username_error_message").html("Should be between 5-20 characters");
        $("#username_error_message").show();
        error_username = true;
    } else {
        $("#username_error_message").hide();
    }

}

function check_password() {

    var password_length = $("#form_password").val().length;
    
    if(password_length < 8) {
        $("#password_error_message").html("At least 8 characters");
        $("#password_error_message").show();
        error_password = true;
    } else {
        $("#password_error_message").hide();
    }

}

function check_retype_password() {

    var password = $("#form_password").val();
    var retype_password = $("#form_retype_password").val();
    
    if(password !=  retype_password) {
        $("#retype_password_error_message").html("Passwords don't match");
        $("#retype_password_error_message").show();
        error_retype_password = true;
    } else {
        $("#retype_password_error_message").hide();
    }

}

function check_email() {

    var pattern = new RegExp(/^[+a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/i);

    if(pattern.test($("#form_email").val())) {
        $("#email_error_message").hide();
    } else {
        $("#email_error_message").html("Invalid email address");
        $("#email_error_message").show();
        error_email = true;
    }

}

$("#registration_form").submit(function() {
                                        
    error_username = false;
    error_password = false;
    error_retype_password = false;
    error_email = false;
                                        
    check_username();
    check_password();
    check_retype_password();
    check_email();
    
    if(error_username == false && error_password == false && error_retype_password == false && error_email == false) {
        return true;
    } else {
        return false;   
    }

});

});

这招对我很管用:

$.validator.messages.required = 'required';

将此代码添加到验证插件后包含的单独文件/脚本中，以覆盖消息，随意编辑:)

jQuery.extend(jQuery.validator.messages, {
    required: "This field is required.",
    remote: "Please fix this field.",
    email: "Please enter a valid email address.",
    url: "Please enter a valid URL.",
    date: "Please enter a valid date.",
    dateISO: "Please enter a valid date (ISO).",
    number: "Please enter a valid number.",
    digits: "Please enter only digits.",
    creditcard: "Please enter a valid credit card number.",
    equalTo: "Please enter the same value again.",
    accept: "Please enter a value with a valid extension.",
    maxlength: jQuery.validator.format("Please enter no more than {0} characters."),
    minlength: jQuery.validator.format("Please enter at least {0} characters."),
    rangelength: jQuery.validator.format("Please enter a value between {0} and {1} characters long."),
    range: jQuery.validator.format("Please enter a value between {0} and {1}."),
    max: jQuery.validator.format("Please enter a value less than or equal to {0}."),
    min: jQuery.validator.format("Please enter a value greater than or equal to {0}.")
});

我从未想过这是如此容易，我正在从事一个处理此类验证的项目。

下面的答案将对那些想要轻松更改验证消息的人有很大帮助。

下面的方法使用“占位符名称”来代替“This Field”。

你可以很容易地修改东西

   // Jquery Validation   
   $('.js-validation').each(function(){

       //Validation Error Messages 

       var validationObjectArray = [];

       var validationMessages = {};

       $(this).find('input,select').each(function(){  // add more type hear

          var singleElementMessages = {};

          var fieldName = $(this).attr('name');

          if(!fieldName){  //field Name is not defined continue ;
              return true;
          }


          // If attr data-error-field-name is given give it a priority , and then to placeholder and lastly a simple text

          var fieldPlaceholderName = $(this).data('error-field-name') || $(this).attr('placeholder') || "This Field";

          if( $( this ).prop( 'required' )){

              singleElementMessages['required'] = $(this).data('error-required-message') || $(this).data('error-message')  || fieldPlaceholderName + " is required";

          }

          if( $( this ).attr( 'type' ) == 'email' ){

              singleElementMessages['email'] = $(this).data('error-email-message') || $(this).data('error-message')  || "Enter valid email in "+fieldPlaceholderName;

          }       



          validationMessages[fieldName] = singleElementMessages;

       });


       $(this).validate({
          errorClass   : "error-message",
          errorElement : "div",
          messages     : validationMessages  
       });  
   });  

@Josh:你可以从你的资源包中翻译消息来扩展你的解决方案

<script type="text/javascript">
    $.validator.messages.number = '@Html.Raw(@Resources.General.ErrorMessageNotANumber)';
</script>

如果你把这段代码放到你的_Layout中。cshtml (MVC)，它可用于所有视图