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>