jQuery Validate表单验证入门学习

本文讲述了jQuery Validate表单验证入门的基础知识,jQuery Validate 插件为表单提供了强大的验证功能,让客户端表单验证变得更简单,同时提供了大量的定制选项,满足应用程序各种需求,以下就是本文的全部内容,特分享给大家。

1、导入 js 库

<script src="https://www.jb51.net/js/jquery.js" type="text/javascript"></script> <script src="https://www.jb51.net/js/jquery.validate.js" type="text/javascript"></script>

2、默认校验规则

jQuery Validate表单验证入门学习

3、默认提示

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).", dateDE: "Bitte geben Sie ein gültiges Datum ein.", number: "Please enter a valid number.", numberDE: "Bitte geben Sie eine Nummer ein.", 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: $.validator.format("Please enter no more than {0} characters."), minlength: $.validator.format("Please enter at least {0} characters."), rangelength: $.validator.format("Please enter a value between {0} and {1} characters long."), range: $.validator.format("Please enter a value between {0} and {1}."), max: $.validator.format("Please enter a value less than or equal to {0}."), min: $.validator.format("Please enter a value greater than or equal to {0}.") },

如需要修改,可在 js 代码中加入:

jQuery.extend(jQuery.validator.messages, { required: "必选字段", remote: "请修正该字段", email: "请输入正确格式的电子邮件", url: "请输入合法的网址", date: "请输入合法的日期", dateISO: "请输入合法的日期 (ISO).", number: "请输入合法的数字", digits: "只能输入整数", creditcard: "请输入合法的信用卡号", equalTo: "请再次输入相同的值", accept: "请输入拥有合法后缀名的字符串", maxlength: jQuery.validator.format("请输入一个 长度最多是 {0} 的字符串"), minlength: jQuery.validator.format("请输入一个 长度最少是 {0} 的字符串"), rangelength: jQuery.validator.format("请输入 一个长度介于 {0} 和 {1} 之间的字符串"), range: jQuery.validator.format("请输入一个介于 {0} 和 {1} 之间的值"), max: jQuery.validator.format("请输入一个最大为{0} 的值"), min: jQuery.validator.format("请输入一个最小为{0} 的值") });

推荐做法,将此文件放入 messages_cn.js 中,在页面中引入:
<script src="https://www.jb51.net/js/messages_cn.js" type="text/javascript"></script>
4、使用方式
1)、将校验规则写到控件中

<script src="https://www.jb51.net/js/jquery.js" type="text/javascript"></script> <script src="https://www.jb51.net/js/jquery.validate.js" type="text/javascript"></script> <script src="https://www.jb51.net/js/jquery.metadata.js" type="text/javascript"></script> $().ready(function() { $("#signupForm").validate(); }); <form method="get" action=""> <p> <label for="firstname">Firstname</label> <input /> </p> <p> <label for="email">E-Mail</label> <input /> </p> <p> <label for="password">Password</label> <input type="password" /> </p> <p> <label for="confirm_password">确认密码</label> <input type="password" /> </p> <p> <input type="submit" value="Submit"/> </p> </form>

使用 的方式,必须引入包:jquery.metadata.js。
可以使用如下的方法,修改提示内容:

在使用 equalTo 关键字时,后面的内容必须加上引号,代码如下所示:

2)、将校验规则写到 js 代码中

$().ready(function() { $("#signupForm").validate({ rules: { firstname: "required", email: { required: true, email: true }, password: { required: true, minlength: 5 }, confirm_password: { required: true, minlength: 5, equalTo: "#password" } }, messages: { firstname: "请输入姓名", email: { required: "请输入Email地址", email: "请输入正确的email地址" }, password: { required: "请输入密码", minlength: jQuery.format("密码不能小于{0}个字 符") }, confirm_password: { required: "请输入确认密码", minlength: "确认密码不能小于5个字符", equalTo: "两次输入密码不一致不一致" } } }); });

messages 处,如果某个控件没有 message,将调用默认的信息

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