teacher.html
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<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>老师端</title>
<link rel="stylesheet" href="../js/codemirror-5.25.0/lib/codemirror.css">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font: 13px Helvetica, Arial;
}
form {
background: #000;
padding: 3px;
position: fixed;
width: 100%;
}
form input {
border: 0;
padding: 10px;
width: 80%;
margin-right: .5%;
}
form button {
width: 19%;
background: rgb(130, 224, 255);
border: none;
padding: 10px;
}
#messages {
list-style-type: none;
margin: 0;
padding: 0;
}
#messages li {
padding: 5px 10px;
}
#messages li:nth-child(odd) {
background: #eee;
}
#messages {
margin-bottom: 40px
}
</style>
</head>
<body>
<h1>老师端</h1>
<ul id="messages"></ul>
<textarea id="teacher" title="HTML"></textarea>
<form action="">
<input id="" autocomplete="off" />
<button>Send</button>
</form>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.js"></script>
<script src="../js/codemirror-5.25.0/lib/codemirror.js"></script>
<script>
$(function() {
var teacherId = document.getElementById('teacher');
var socket = io('http://localhost:3000');
var teacher = CodeMirror.fromTextArea(teacherId, {
value: '输入HTML代码',
mode: 'text/javascript',
lineNumbers: true,
smartIndent: false
});
CodeMirror.on(teacher,"change", function(instance, changeObj) {
console.log(instance);
console.log(changeObj);
var changeObjStr = JSON.stringify(changeObj);
socket.emit('chat message', changeObjStr);
socket.emit('programming.content', teacher.getValue());
});
// $('form').submit(function() {
// socket.emit('chat message', $('#m').val());
// $('#m').val('');
// return false;
// });
// socket.on('chat message', function(msg) {
// console.log(msg);
// $('#messages').append($('<li>').text(msg));
// window.scrollTo(0, document.body.scrollHeight);
// });
});
</script>
</body>
</html>