协同编辑: document.getElementById不提升显示
协同编辑: document.getElementById不提升显示
提问于 2016-03-18 09:39:41
请给我一个合作编辑的小演示，以酒吧/潜艇的方式。场景:服务器:S客户端: A，B A发送文本S. S接收文本，B发送文本到B. B向S发送文本，S接收文本，A发送文本，A接收文本，但document.getElementById没有上升显示。
我怀疑问题在于javascript执行命令..。我有点困惑，有人能指出我的委托人出了什么问题吗？
服务器：
var app = require('express')();
var http = require('http').createServer(app)
var io = require('socket.io').listen(http);
//Server accepting connect on this port
http.listen(3000);
//Establishing connection to client and disconnecting
io.sockets.on('connection', function(socket){
console.log('Connected to a new client');
socket.on('room', function(room) {
socket.join(room);
console.log('join room '+ room);
});
socket.on('disconnect', function(){
socket.disconnect();
console.log('Disconnected from a client');
});
var room= 'room1';
//Data exchange between client and server
//Server receives new data from a client and broadcast it to others
socket.on('client_character',function(msg){
//receive data
console.log('Data from client'+msg.buffer);
socket.in(room).broadcast.emit('server_character',msg.buffer);
//socket.broadcast.to(room).emit('server_character', msg.buffer);
//socket.to(room).emit('server_character',msg.buffer);
});
});Client:在Apache服务器上单独运行
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>Client</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
<link rel="stylesheet" type="text/css" href="styles/style.css">
</head>
<body>
<textarea id="notepad"></textarea><br/>
<script>
$(function () {
var socket = io.connect('http://localhost:3000',
{'sync disconnect on unload':false});
var room = "room1";
socket.on('connect', function() {
socket.emit('room', room);
});
//receive character from server
socket.on('server_character',function(content){
console.log('From Server:'+ content);
document.getElementById('notepad').innerHTML=content;
});
//For each typed character
$('#notepad').on('keypress',function(){
var character= $('#notepad').val();
//send character to servers
socket.emit('client_character',{buffer:character});
console.log('To Server:'+ {buffer:character} );
});
});
</script>
</body>
</html>style.css：
#notepad{
height:500px;
width:500px;
font-size: 14px;
color: brown;
}package.json：
{
"name": "collaborative",
"version": "0.0.1",
"description": "none",
"dependencies": {
"express": "^4.10.2",
"socket.io": "^1.4.5"
}
}回答 1
Stack Overflow用户
发布于 2016-03-20 18:33:17
为了修复输入中的一个错误并添加更多的日志，我在旅游代码中做了一些工作，这是在这里使用FF和Chrome (我这里没有IE )。
服务器：
var app = require('express')();
var http = require('http').createServer(app);
var io = require('socket.io').listen(http);
//Server accepting connect on this port
http.listen(3000);
//Establishing connection to client and disconnecting
io.sockets.on('connection', function(socket){
console.log('Connected to a new client');
socket.on('error', function(err) {
//here i change options
console.log('Error!', err);
});
socket.on('room', function(room) {
socket.join(room);
console.log('join room: '+ room);
});
socket.on('disconnect', function(){
// socket.disconnect();
console.log('Disconnected from a client');
});
var room= 'room1';
//Data exchange between client and server
//Server receives new data from a client and broadcast it to others
socket.on('client_character',function(msg){
//receive data
console.log('Data from client: '+msg.buffer);
socket.in(room).broadcast.emit('server_character',msg.buffer);
//socket.broadcast.to(room).emit('server_character', msg.buffer);
//socket.to(room).emit('server_character',msg.buffer);
});
});客户端：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>Client</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
<link rel="stylesheet" type="text/css" href="styles/style.css">
</head>
<body>
<textarea id="notepad"></textarea><br/>
<script>
$(function () {
var socket = io.connect('http://localhost:3000',
{'sync disconnect on unload':false});
var room = "room1";
socket.on('connect', function() {
socket.emit('room', room);
});
//receive character from server
socket.on('server_character',function(content){
console.log('From Server:'+ content);
document.getElementById('notepad').innerHTML=content;
});
//For each typed character
$('#notepad').on('keyup',function(){
var character= $('#notepad').val();
//send character to servers
socket.emit('client_character', {buffer:character});
console.log('To Server:', { buffer:character } );
});
});
</script>
</body>
</html>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/36080911
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