1 username:{
2　　　　　　　　required:true,//每一项叫method
3 　　　　　　　 minlength:2,
4              maxlength:16
5           },

1 <script type="text/javascript" src="jq/jquery-3.1.1.js"></script>
2 <script type="text/javascript" src="jq/jquery.validate.js"></script>

<form id="demoform"><fieldset><legend>用户登录</legend><div class="input-group"><label class="control-label" for="username">用户名</label><input id="username" name="username" type="text"></input></div><div class="input-group"><label class="control-label" for="password">密码</label><input id="password" name="password" type="password"></input></div><div class="input-group"><label class="control-label" for="confirm-password">确认密码</label><input id="confirm-password" name="confirm-password" type="password"></input></div><div class="input-group"><label class="control-label" for="number">0-100</label><input id="number" name="number" type="text"></input></div><div class="input-group"><label class="control-label" for="email">邮箱</label><input id="email" name="email" type="text"></input></div><div class="input-group"><label class="control-label" for="telephone">手机号</label><input id="telephone" name="telephone" type="text"></input></div><div class="input-group"><label class="control-label" for="url">url</label><input id="url" name="url" type="number"></input></div>                        <div class="input-group"><label class="control-label" for="date">出生日期</label><input id="date" name="date" type="text"></input></div><input type="submit" value="登录"></input></fieldset></form>

    <script type="text/javascript">var b=10;$(document).ready(function(){var a=10;var validate=$('#demoform').validate({//debug:true,//验证规则
                rules:{                username:{//name值required:true,minlength:2, maxlength:16,//get请求//remote:"remote.json" //post请求/*remote:{url:'remote.jiso',type:'post',data:{loginTime:function(){return +new Date;//取一个gettime，返回一个long型的毫秒数的时间，+把一个字符转成一个数字                                    }}}*/},password:{required:true,rangelength:[8,16]},//"带-要用引号括起来""confirm-password":{equalTo:"#password"//选择器，此处是id选择器,判断与该选择器元素的值是否相同
                    },number:{max:100,min:0,//range:[0,100] 也是0-100可以有小数//number:true,//数字digits:true//整数
                    },email:{required:true,email:true},                    url:{url:true,},telephone:{required:true,number:true,rangelength:[11,11]},date:{date:true,//用new date()来转换，转换成功就是对的dateISO:true //2012-11-12 或是/
                    }},//错误提示
                messages:{username:{required:"必须填写用户名",minlength:"用户名最少为两位",maxlength:"用户名最多为十位"},password:{required:"必须填写密码",rangelength:"密码最少为八位,最多为十六位"},"confirm-password":{equalTo:"两次输入密码不一致"},number:{max:"最大值100",min:"最小值0",//number:"请输入数字",digits:"请输入整数"},email:{required:"必须填写邮箱",email:"请正确填写邮箱地址"},                    url:{url:"请填写以http开头的正确url地址",},telephone:{required:"必须填写手机号",number:"请输入数字",rangelength:"手机号为11位数字"},date:{dateISO:"2012-11-12 或是/分隔" }}})})</script>