作业18-完成登录与注册页面的前端

 

 

 

#html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>霓虹 - 点击打开你的视野</title>
    <link href="../static/css/denglu.css" rel="stylesheet" type="text/css">
    <script type='text/javascript' src='../static/js/denglu.js'></script>
</head>
<body>
<div class="box">
    <h1>WELCOME</h1>
   <h2>登录页面</h2>
    <div class="input_box">
        <input id="uname" type="text" placeholder="请输入用户名" style="width:300px">
    </div>
    <div class="input_box">
        <input id="upass" type="password" placeholder="请输入密码" style="width:300px">
    </div>
    </div>
    <div id="error_box"><br></div>
    <div class="input_box">
        <button onclick="fnLogin()">登录</button><br>
        <a class="link-forget cl-link-blue"href="get_password.html">忘记密码</a>
        <a class="link-forget cl-link-blue"href="index.php?type=login">注册</a>
</div>
</body>
</html>
#js
function fnLogin() {
            var oUname = document.getElementById("uname")
            var oError = document.getElementById("error_box")
            var oUpass = document.getElementById("upass")
            oError.innerHTML = "<br>"

      if (oUname.value.length < 6 || oUname.value.length > 20) {
          oError.innerHTML = "用户名6-20位";
          return;
      } else if ((oUname.value.charCodeAt(0) >= 48) && (oUname.value.charCodeAt(0) <= 57)) {
          oError.innerHTML = "first letter.";
          return;
      } else for (var i = 0; i < oUname.value.length; i++) {
          if ((oUname.value.charCodeAt(i) < 48) || (oUname.value.charCodeAt(i) > 57) && (oUname.value.charCodeAt(i) < 97) || (oUname.value.charCodeAt(i) > 122)) {
           oError.innerHTML = "only letter or number";
            return;
          }
         if (oUpass.value.length < 6 || oUpass.value.length > 12) {
        oError.innerHTML = "密码6-12位"
        return;
         }
      }
        window.alert("登录成功！！")
    }
#css
body{
    padding-right:200px;
    padding-left:200px;
    color: indianred;
    padding-top: 40px;
    font-size: 15px;
    background: lightpink;
    font-family:verdana,Arial,Helvetica,sans-serif;
}
h1{
    font-size: 25px;
}
h2{
    padding-left: 100px;
}

 posted on 2017-11-01 15:55  048刘思华  阅读(151)  评论(0)  编辑  收藏  举报