<!DOCTYPE html> <html>
<head>     <meta charset="utf-8" />     <title>用户注册</title>     <style type="text/css">         body {             background-color: rgb(177, 208, 224);             font: normal 12px Trebuchet MS;             color: #000;         }
        .roundedCorners {             width: 350px;             padding: 10px;             background: #58bc58;             box-shadow: 0px 0px 10px 0px #888888;             border: 1px solid #DDEEF6;             border-radius: 6px;             margin: auto;         }
        .roundedCorners-textbox {             border: 1px solid #999;             width: 250px;         }
        .checkbox {             margin-left: 30px;             border: 1px solid #999;             width: 20px;         }
        .label {             display: inline-block;             width: 50px;             text-align: center;         }
        .default {             color: grey;             font-size: 12px;         }
        .input {             color: grey;             font-size: 12px;         }     </style> </head> <script>     window.onload = function () {         /*             表单提交是默认行为                 * preventDefault()                 * returnValue = false;                       知识点:                 * 正则表达式的方法                     * reg.test(str):用正则表达式reg验证str是否合法                     * exec()    等同于 match                      * 分组:()                     * 引用                         * 正则内引用:\n \1,\2                         * 正则外引用:$n      $1,$2                 * 非:                     * ^                     * [^\d]                 * 表示所有字符:[\s\S],[\w\W],[\d\D]          */         var btnCheck = document.getElementById('btnCheck');         btnCheck.onclick = function (e) {             /*                 如果以下表单有一个不符合,则不允许提交表单              */
            e = e || window.event;
            /*             验证账号                 * 不能为空,                 * 不能使用特殊字符(数字、字母、下划线、横杠)开头,                 * 必须以字母开头,                 * 长度6-20             */             var username = document.getElementById('username').value;             if (!/^[a-z][\w\-]{5,19}$/.test(username)) {                 alert('您输入的用户名不合法');
                // e.preventDefault();                 // return;                 return false;             }

            //昵称只能输入中文             var nickname = document.getElementById('nickname').value;             if (!/^[\u2E80-\u9FFF]+$/.test(nickname)) {                 alert('昵称必须为中文');                 return false;             }
            /*                 电子邮件                     jinrong.xie@qq.com                     123@qq.com                     x_x@163.com                     x-x@a-r.com.cn                     x.x@laoxie.com                     邮箱用户名必须3-30个字符              */             var email = document.getElementById('email').value;             if (!/^[a-z0-9][\w\-\.]{2,29}@[a-z0-9\-]{2,67}(\.[a-z\u2E80-\u9FFF]{2,6})+$/.test(email)) {                 alert('邮箱格式错误');                 return false;             }
            /*                 身份证                     18/15                     445655 19900707 2165                     445655 19900707 211x              */             var identity = document.getElementById('identity').value;             if (!/^(\d{17}|\d{14})[\dx]$/.test(identity)) {                 alert('身份证格式错误');                 return false;             }

            /*                 手机号码                     11位                     158 8888 8888                     1 [34578]              */             var phone = document.getElementById('phone').value;             if (!/^1[3-9]\d{9}$/.test(phone)) {                 alert('手机号错误');                 return false;             }
            /*                 生日                     1999/05/08                     1999-5-8                     19990508                     1999-05/08  不合法                     199905                          引用分组                         * 正则内:\n                         * 正则外:$n                     分组顺序:以左括号出现的顺序为分组顺序              */
            var birthday = document.getElementById('birthday').value;             if (!/^\d{4}([\/\-]?)\d{1,2}\1\d{1,2}$/.test(birthday)) {                 alert('生日格式错误');                 return false;             }

            /*                 密码                     长度6-20                     不能包含空格              */             var password = document.getElementById('password').value;             if (!/^\S{6,20}$/.test(password)) {                 alert('密码禁止空格');                 return false;             }

            var confirm_pwd = document.getElementById('confirm_pwd').value;             if (confirm_pwd != password) {                 alert('两次输入密码不一致,请你仔细看看');                 return false;             }
        }
        // 根据身份自动写入生日         document.getElementById('identity').onblur = function () {             // 445655199007072165             var res = this.value.match(/\d{6}(\d{8})\d{4}/);             if (res) {                 res = res[1];             }             document.getElementById('birthday').value = res;         }     } </script>
<body>     <form id="myform" action="05success.html" method="get">         <div class="roundedCorners">             <label class="label">账号</label>             <input id="username" name="username" type="text" placeholder="用户名长度为6-20,禁止特殊字符" class="default roundedCorners-textbox" />             <br />             <br />             <label class="label">昵称</label>             <input id="nickname" name="nickname" type="text" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">电子邮件</label>             <input id="email" name="email" type="text" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">身份证</label>             <input id="identity" name="identity" type="text" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">手机号码</label>             <input id="phone" name="phone" type="text" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">生日</label>             <input id="birthday" name="birthday" type="text" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">密码</label>             <input id="password" name="password" type="password" class="roundedCorners-textbox" />             <br />             <br />             <label class="label">确认密码</label>             <input id="confirm_pwd" name="confirm_pwd" type="text" class="roundedCorners-textbox" />             <br />             <br />             <input type="checkbox" class="checkbox" />             <label>10天内免登陆</label>             <br/>             <br/>
            <input type="submit" id="btnCheck" value="确定" />
            <input type="reset" value="清空" />         </div>     </form>
</body>
</html>
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