A, / public / js / index.js
// Log
$login.find('button').on('click',()=>{
$.ajax({
type:'post',
url:'/api/user/login',
data:{
username:$login.find('[name="username"]').val(),
password:$login.find('[name="password"]').val()
},
dataType:'json',
success:(data)=>{
console.log(data)
$user.html(data.userInfo.username)
if(data){
$login.hide();
$register.hide();
$userInfo.show()
}
if(data.userInfo.username=='admin'){
$admin.show();
}else{
$admin.hide();
}
}
})
})
Two, / router / api.js
router.post('/user/login',(req,res,next)=>{
// 1, to retrieve a front coming username and password
var username = req.body.username
var password = req.body.password
// 2, determination data
if(username==''||password==''){
responseData.code = 1
responseData.message = 'user name and password can not be empty'
res.json(responseData)
return
}
// 3, query the user name and password from the data
/**
* Query equal username in the database the username, returns a mongoose object. If the query can not return empty.
* It can be used for Analyzing
*/
User.findOne({
username:username,
password:password
}).then((info)=>{
console.log(info)
if(!info){
responseData.code = 2
responseData.message = 'user name or password is incorrect'
res.json(responseData)
return
}
responseData.message = "successful landing."
responseData.userInfo = {
_id :info._id,
username : info.username
}
res.json(responseData)
})
Three, /view/login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="/public/css/login.css">
<link rel="stylesheet" href="/public/css/bootstrap.css">
<script src="/public/js/jquery.js"></script>
<script src="/public/js/index.js"></script>
</head>
<body>
<div class="left">
</div>
<div class="right">
<div class="jgb">
<div class="j1"></div>
<div class="j2"></div>
<div class="j3"></div>
</div>
<p></p>
<div class="userinfo none">
<h2>hello 。 <span id="user"></span></h2>
<a href="/logout"> From the landing </a>
</div>
<div id="admin" class="none">
You are an administrator, <a href="/admin"> you can click here to use Admin Center </a> <br>
<a href=""></a>
</div>
<div class="form" id="register">
<div class="form-group">
<label for="username">用户名</label>
<input type="text" class="form-control" id="username" name="username" placeholder="User">
</div>
<div class="form-group">
<label for="password">密码</label>
<input type="password" class="form-control" id="password" name="password" placeholder="Password">
</div>
<div class="form-group">
<label for="repassword">密码</label>
<input type="password" class="form-control" id="repassword" name="repassword" placeholder="Password">
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary">注册</button>
<div class="info"></div>
</div>
Have an account? <a class="change" href="javascripte:;"> immediately landed </a>
</div>
<div class="form" id="login">
<div class="form-group">
<label for="username">用户名</label>
<input type="text" class="form-control" id="username" name="username" placeholder="User">
</div>
<div class="form-group">
<label for="password">密码</label>
<input type="password" class="form-control" id="password" name="password" placeholder="Password">
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary">登 陆</button>
</div>
Not registered? <a class="change" href="javascripte:;"> immediately registered </a>
</div>
</div>
</body>
</html>
Four, / public / css / login.css
*{
margin: 0;
padding: 0;
box-sizing: border-box
}
body{
padding: 60px 100px;
background: #ecf0f1;
position: relative;
font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif
}
.left{
width: 600px;
height: 600px;
border-radius: 10px;
background: url('/public/images/dl.jpg') center;
background-size: cover;
float: left;
}
.right{
width: 525px;
height: 600px;
padding: 10px;
float: left;
margin-left: 50px;
}
.jgb{
width: 100%;
height: 30px;
border-radius: 10px;
margin-bottom: 30px;
}
.jgb .j1{
width: 20%;
height: inherit;
background: #9b59b6;
float: left;
}
.jgb .j2{
width: 60%;
height: inherit;
background: #f1c40f;
float: left;
}
.jgb .j3 {
width: 20%;
height: inherit;
background: #9b59b6;
float: left;
}
.form{
width: 100%;
padding: 10px 30px;
margin-top: 30px;
border: 2px solid #9b59b6;
}
a{
text-decoration: none;
color: #ecf0f1
}
p{
margin: 20px;
}
#login{
display: none;
}
.info{
color: red;
font-family: 'Courier New', Courier, monospace;
margin-top: 30px;
}
#userInfo{
background: #2c3e50;
padding: 0px 20px 6px 20px;
color: azure;
border-radius: 5px;
}
.none{
display: none;
}