

<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>
$().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>Tips:
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'}"
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