在线聊天功能的实现
<!DOCTYPE html>
<html>
<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>Chat_Room_Case</title>
<style>
* {
padding: 0;
margin: 0;
}
ul li {
list-style: none;
margin-left: -200px;
padding: 4px;
}
.container {
margin: 0 auto;
text-align: center;
margin: 15px;
}
.container .chatbox {
margin: 0 auto;
width: 300px;
height: 400px;
border: 1px solid #ccc;
}
.container .chatbox span {
display: block;
width: 100%;
color: #fff;
background: #5c28d4;
}
.container .btn {
margin: 0 auto;
width: 120px;
height: 45px;
color: #fff;
letter-spacing: 12px;
background: rgb(26, 121, 199);
border-radius: 5px;
text-align: center;
}
.container .msg {
height: 40px;
border: 1px solid #ddd;
padding: 0 5px;
}
</style>
</head>
<body>
<div class="container">
<div id="cbox" class="chatbox">
<span style="font-size:20px;">Welcome to this Chatroom</span>
<hr>
<ul>
<li></li>
</ul>
</div>
<div>
<input type="text" placeholder="欢迎来到本聊天室......."class="msg"> <button class="btn">发送</button></div>
</div>
<script>
let input = document.getElementsByClassName('msg')[0];
let ul = document.getElementsByTagName('ul')[0];
let button = document.getElementsByClassName('btn')[0];
button.onclick = function () {
let li = document.createElement('li');
li.innerHTML = input.value;
ul.appendChild(li);
input.value = '';
}
</script>
</body>
</html>