Jquery验证只能验证表单吗，能验证表单里指定的DIV吗

Answer 1

是的，要写好校验规则。
1、将校验规则写到控件中
<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>
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"

}
}
});
});