使用jQuery验证插件可以用于客户端的简单校验,在Web 开发中(MVC学习系列-表单数据的校验),主要用于实现用户信息的准确填写。下面就简单为大家讲解一下这种验证插件的使用。
<script src="../js/jquery.js" type="text/javascript"></script> <script src="../js/jquery.validate.js" type="text/javascript"></script>
(1)required:true 必输字段
(2)remote:"check.php" 使用ajax方法调用check.php验证输入值
(3)email:true 必须输入正确格式的电子邮件
(4)url:true 必须输入正确格式的网址
(5)date:true 必须输入正确格式的日期 日期校验ie6出错,慎用
(6)dateISO:true 必须输入正确格式的日期(ISO),例如:2009-06-23,1998/01/22 只验证格式,不验证有效性
(7)number:true 必须输入合法的数字(负数,小数)
(8)digits:true 必须输入整数
(9)creditcard: 必须输入合法的信用卡号
(10)equalTo:"#field" 输入值必须和#field相同
(11)accept: 输入拥有合法后缀名的字符串(上传文件的后缀)
(12)maxlength:5 输入长度最多是5的字符串(汉字算一个字符)
(13)minlength:10 输入长度最小是10的字符串(汉字算一个字符)
(14)rangelength:[5,10] 输入长度必须介于 5 和 10 之间的字符串")(汉字算一个字符)
(15)range:[5,10] 输入值必须介于 5 和 10 之间
(16)max:5 输入值不能大于5
(17)min:10 输入值不能小于10
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.", 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: $.validator.format("Please enter a value greater than or equal to {0}.") }
如需要修改,可在js代码中加入:
jQuery.extend(jQuery.validator.messages, { required: "必选字段", remote: "请修正该字段", email: "请输入正确格式的电子邮件", url: "请输入合法的网址", date: "请输入合法的日期", dateISO: "请输入合法的日期 (ISO).", number: "请输入合法的数字", digits: "只能输入整数", creditcard: "请输入合法的信用卡号", equalTo: "请再次输入相同的值", accept: "请输入拥有合法后缀名的字符串", maxlength: jQuery.validator.format("请输入一个 长度最多是 {0} 的字符串"), minlength: jQuery.validator.format("请输入一个 长度最少是 {0} 的字符串"), rangelength: jQuery.validator.format("请输入 一个长度介于 {0} 和 {1} 之间的字符串"), range: jQuery.validator.format("请输入一个介于 {0} 和 {1} 之间的值"), max: jQuery.validator.format("请输入一个最大为{0} 的值"), min: jQuery.validator.format("请输入一个最小为{0} 的值") });
推荐做法,将此文件放入messages_cn.js中,在页面中引入
<script src="../js/messages_cn.js" type="text/javascript"></script>
<script src="../js/jquery.js" type="text/javascript"></script> <script src="../js/jquery.validate.js" type="text/javascript"></script> <script src="./js/jquery.metadata.js" type="text/javascript"></script>
<pre name="code" class="html">$().ready(function() { $("#signupForm").validate(); }); <form id="signupForm" method="get" action=""> <p> <label for="firstname">Firstname</label> <input id="firstname" name="firstname" class="required" /> </p> <p> <label for="email">E-Mail</label> <input id="email" name="email" class="required email" /> </p> <p> <label for="password">Password</label> <input id="password" name="password" type="password" class="{required:true,minlength:5}" /> </p> <p> <label for="confirm_password">确认密码</label> <input id="confirm_password" name="confirm_password" type="password" class="{required:true,minlength:5,equalTo:'#password'}" /> </p> <p> <input class="submit" type="submit" value="Submit"/> </p> </form>使用class="{}"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:
class="{required:true,minlength:5,messages:{required:'请输入内容'}}"
在使用equalTo关键字时,后面的内容必须加上引号,如下代码:
class="{required:true,minlength:5,equalTo:'#password'}"
$().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" } } }); }); //messages处,如果某个控件没有message,将调用默认的信息 <form id="signupForm" method="get" action=""> <p> <label for="firstname">Firstname</label> <input id="firstname" name="firstname" /> </p> <p> <label for="email">E-Mail</label> <input id="email" name="email" /> </p> <p> <label for="password">Password</label> <input id="password" name="password" type="password" /> </p> <p> <label for="confirm_password">确认密码</label> <input id="confirm_password" name="confirm_password" type="password" /> </p> <p> <input class="submit" type="submit" value="Submit"/> </p> </form>
注意:
1.required:true 必须有值