标签：输入密码 letter pre href dea code 技术分享 学院 font
完成登录与注册页面的HTML+CSS+JS，其中的输入项检查包括：
用户名6-12位
首字母不能是数字
只能包含字母和数字
密码6-12位
注册页两次密码是否一致
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>登陆</title>
<link href="../static/css/denglu.css" rel="stylesheet" type="text/css">
<script src="../static/js/denglu.js"></script>
</head>
<body>
<div class="box">
<h2>广州商学院</h2>
<h3>登录</h3>
<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>
<br>
<div id="error_box"><br></div>
<div class="input_box">
<button onclick="fnLogin()">登陆</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>
</div>
<script>
window.alert("go")
</script>
</body>
</html>
js
function fnLogin() {
var oUname = document.getElementById("uname")
var oName = document.getElementById("nname")
var oError = document.getElementById("error_box")
var oUpass = document.getElementById("upass")
var ooUpass=document.getElementById("uupass")
oError.innerHTML = "<br>"
//unname
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;
}
}
//upass
if (oUpass.value.length < 6 || oUpass.value.length > 12) {
oError.innerHTML = "密码6-12位"
return;
}
//uupass
if (ooUpass.value!=oUpass.value) {
oError.innerHTML = "重复密码错误"
return;
}
//name
if (oName.value.length < 3 || oUpass.value.length > 6) {
oError.innerHTML = "昵称3-6位";
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;
}
}
window.alert("登陆成功！")
}
css
body{ background: paleturquoise; padding-right:200px; padding-left:200px; color: #FFA500; padding-top: 40px; font-size: 16px; background: blanchedalmond; font-family:verdana,Arial,Helvetica,sans-serif; } h2{ padding-left: 100px; } h3{ padding-left: 80px; }
标签：输入密码 letter pre href dea code 技术分享 学院 font
原文地址：http://www.cnblogs.com/yybx/p/7760101.html
