完成登录与注册页面的前端
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
html代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>首页</title>
<link href="../static/css/111.css"rel="stylesheet" type="text/css">
<script src="../static/js/111.js"></script>
</head>
<body>
<div class="box">
<h2>登录</h2>
<div class="input_box">
<input id="uname" type="text" placeholder="请输入用户名">
</div>
<div class="input_box">
<input id="upass"type="password"placeholder="请输入密码">
</div>
<div id="error_box"><br></div>
<div class="input_box">
<button onclick="fnLogin()">登录</button>
</div>
</div>
</body>
</html>
css代码：
body{
width: 100px;
heigth:100px;
margin: 0;
background: blanchedalmond;
background:rgba(12, 82, 122, 2);
}
h2{
background: rgba(0,90,120,0.9);
color: coral;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-weight: normal;
from-size:2em;
padding: 10px 10px 10px 20px;
margin-top: 0;
margin-bottom: 15px;
}
.box{
text-align: center;
vertical-align: middle;
position: absolute;
top: 50%;
left: 50%;
margin: -150px 0 0 -150px;
border: 1px solid #ccc;
width: 300px;
}
.input_box{
padding: 5px;
min-width: 50%;
height: 20px;
border-radius: 4px;
border: none;
font-family: 'Nunito', sans-serif;
font-weight: normal;
}
.button{
text-align: center;
display: block;
padding: 0;
width: 100%;
margin-bottom: 10px;
color: #fff;
font-family: 'Nunito', sans-serif;
font-weight: 500;
font-size: 0.8em;
background: darkgoldenrod;
}
js：
function fnLogin () {
var oUname = document.getElementById("uname");
var oUpass = document.getElementById("upass");
var oError = document.getElementById("error_box");
var isError = true;
oError.innerHTML = "<br>"
//uname
if (oUname.value.length > 20 || oUname.value.length < 6) {
oError.innerHTML = "请输入用户名：6-20位";
isError = false;
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="此用户密码只能包含字母和数字";
return;
}
}
//upass
if (oUpass.value.length>20||oUpass.value.length<6){
oError.innerHTML="用户名密码是6-20位";
return
}
window.alert("登录成功！")
}
注册html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册</title>
<link href="../static/css/denglu.css"rel="stylesheet" type="text/css">
<script src="../static/js/111.js"></script>
</head>
<body>
<div class="box">
<h2>注册</h2>
<div class="input_box">
你的昵称 <input id="uname" type="text" placeholder="请输入你的昵称">
</div>
<div class="input_box">
密码： <input id="upass"type="password"placeholder="请输入密码">
</div>
<div class="input_box">
手机号：<input id="phonenumber" type="text"placeholder="请输入手机号">
</div>
<div id="error_box"><br></div>
<div class="input_box">
<button onclick="fnLogin()">确认注册</button>
</div>
</div>
</body>
</html>
css：
h2{
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-weight: normal;
from-size:28px;
margin-top: auto;
height: 40px;
width: 60px;
background: aquamarine;
}
.box{
background: azure;
position: absolute;
text-align: center;
vertical-align: middle;
position: absolute;
border: 1px solid #ccc;
height: 300px;
width: 400px;
}
.input_box{
height: 30px;
margin: 5px;
text-align: center;
}
.button{
text-align: center;
display: block;
width: 100px;
height: 40px;
margin-rightm: 50px;
color: #fff;
font-family: 'Nunito', sans-serif;
font-size: 16em;
background: darkgoldenrod;
}
js：
function fnLogin () {
var oUname = document.getElementById("uname");
var oUpass = document.getElementById("upass");
var oError = document.getElementById("error_box");
var isError = true;
oError.innerHTML = "<br>"
//uname
if (oUname.value.length > 20 || oUname.value.length < 6) {
oError.innerHTML = "请输入用户名：6-20位";
isError = false;
return;
}else if((oUname.value.charCodeAt(0)>=48 && (oUname.value.charCodeAt(0)<=57))){
oError.innerHTML="昵称首字母不能是数字.";
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="此用户密码只能包含字母和数字";
return;
}
}
//upassword
if (oUpass.value.length>20||oUpass.value.length<6){
oError.innerHTML="用户名密码是6-20位";
isError=false;
return
}
window.alert("登录成功！")
}
