原博客
jQuery Validate验证框架详解
jQuery校验官网地址：https://jqueryvalidation.org/
一、导入js库
<script type="text/javascript" src="<%=path %>/validate/jquery-1.6.2.min.js"></script> <script type="text/javascript" src="<%=path %>/validate/jquery.validate.min.js"></script>
二、默认校验规则
(1)、required:true 必输字段 (2)、remote:"remote-valid.jsp" 使用ajax方法调用remote-valid.jsp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:true 必须输入合法的信用卡号 (10)、equalTo:"#password" 输入值必须和#password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
三、默认的提示
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 g眉ltiges 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：
$.extend($.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: $.validator.format("请输入一个长度最多是 {0} 的字符串"), minlength: $.validator.format("请输入一个长度最少是 {0} 的字符串"), rangelength: $.validator.format("请输入一个长度介于 {0} 和 {1} 之间的字符串"), range: $.validator.format("请输入一个介于 {0} 和 {1} 之间的值"), max: $.validator.format("请输入一个最大为 {0} 的值"), min: $.validator.format("请输入一个最小为 {0} 的值") });
推荐做法，将此文件放入一个单独的js,messages_cn.js中，在页面中引入
<script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script>
四、使用方式
1、metadata用法，将校验规则写到控件中
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":"
+ request.getServerPort() + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>jQuery Validate验证框架详解-metadata用法</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery-1.6.2.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.validate.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.metadata.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/messages_zh.js"></script>
<script type="text/javascript">
$(function(){
$("#myform").validate();
});
</script>
</head>
<body>
<form id="myform" method="post" action="">
<p>
<label for="myname">用户名：</label>
<!-- id和name最好同时写上 -->
<input id="myname" name="myname" class="required" />
</p>
<p>
<label for="email">E-Mail：</label>
<input id="email" name="email" class="required email" />
</p>
<p>
<label for="password">登陆密码：</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>
<label for="confirm_password">性别：</label>
<!-- 表示必须选中一个 -->
<input type="radio" id="gender_male" value="m" name="gender" class="{required:true}" />
<input type="radio" id="gender_female" value="f" name="gender"/>
</p>
<p>
<label for="confirm_password">爱好：</label>
<!-- checkbox的minlength表示必须选中的最小个数,maxlength表示最大的选中个数,rangelength:[2,3]表示选中个数区间 -->
<input type="checkbox" id="spam_email" value="email" name="spam[]" class="{required:true, minlength:2}" />
<input type="checkbox" id="spam_phone" value="phone" name="spam[]" />
<input type="checkbox" id="spam_mail" value="mail" name="spam[]" />
</p>
<p>
<label for="confirm_password">城市：</label>
<select id="jungle" name="jungle" title="Please select something!" class="{required:true}">
<option value=""></option>
<option value="1">厦门</option>
<option value="2">泉州</option>
<option value="3">Oi</option>
</select>
</p>
<p>
<input class="submit" type="submit" value="立即注册" />
</p>
</form>
</body>
</html>
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'}"。
2、将校验规则写到js代码中
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":"
+ request.getServerPort() + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>jQuery Validate验证框架详解</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery-1.6.2.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.validate.min.js"></script>
<script type="text/javascript">
$(function(){
var validate = $("#myform").validate({
debug: true, //调试模式取消submit的默认提交功能
//errorClass: "label.error", //默认为错误的样式类为：error
focusInvalid: false, //当为false时，验证无效时，没有焦点响应
onkeyup: false,
submitHandler: function(form){ //表单提交句柄,为一回调函数，带一个参数：form
alert("提交表单");
form.submit(); //提交表单
},
rules:{
myname:{
required:true
},
email:{
required:true,
email:true
},
password:{
required:true,
rangelength:[3,10]
},
confirm_password:{
equalTo:"#password"
}
},
messages:{
myname:{
required:"必填"
},
email:{
required:"必填",
email:"E-Mail格式不正确"
},
password:{
required: "不能为空",
rangelength: $.format("密码最小长度:{0}, 最大长度:{1}。")
},
confirm_password:{
equalTo:"两次密码输入不一致"
}
}
});
});
</script>
</head>
<body>
<form id="myform" method="post" action="">
<p>
<label for="myname">用户名：</label>
<!-- id和name最好同时写上 -->
<input id="myname" name="myname" />
</p>
<p>
<label for="email">E-Mail：</label>
<input id="email" name="email" />
</p>
<p>
<label for="password">登陆密码：</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="立即注册" />
</p>
</form>
</body>
</html>
五、常用方法及注意问题
1、用其他方式替代默认的submit
$(function(){ $("#signupForm").validate({ submitHandler:function(form){ alert("submit!"); form.submit(); } }); });
可以设置validate的默认值，写法如下：
$.validator.setDefaults({
submitHandler: function(form) { alert("submit!"); form.submit(); }
});
如果想提交表单，需要使用form.submit()，而不要使用$(form).submit()
2、radio和checkbox、select的验证
1.radio的required表示必须选中一个
<input type="radio" id="gender_male" value="m" name="gender" class="{required:true}" />
<input type="radio" id="gender_female" value="f" name="gender"/>
2.checkbox的required表示必须选中
<input type="checkbox" class="checkbox" id="agree" name="agree" class="{required:true}" />
checkbox的minlength表示必须选中的最小个数,maxlength表示最大的选中个数,rangelength:[2,3]表示选中个数区间
<input type="checkbox" id="spam_email" value="email" name="spam[]" class="{required:true, minlength:2}" />
<input type="checkbox" id="spam_phone" value="phone" name="spam[]" />
<input type="checkbox" id="spam_mail" value="mail" name="spam[]" />
3.select的required表示选中的value不能为空
<select id="jungle" name="jungle" title="Please select something!" class="{required:true}">
<option value=""></option>
<option value="1">Buga</option>
<option value="2">Baga</option>
<option value="3">Oi</option>
</select>
select的minlength表示选中的最小个数（可多选的select）,maxlength表示最大的选中个 数,rangelength:[2,3]表示选中个数区间
<select id="fruit" name="fruit" title="Please select at least two fruits" class="{required:true, minlength:2}" multiple="multiple">
<option value="b">Banana</option>
<option value="a">Apple</option>
<option value="p">Peach</option>
<option value="t">Turtle</option>
</select>