如何使用Node.js運行用js編寫的server.js

-1

我有一個nodejs語言的文件，我在互聯網上找到了，我想運行它，但我不知道如何運行它。我嘗試用cmd命令運行：node server.js，但它不起作用。如何使用Node.js運行用js編寫的server.js

server.js文件

var port = process.env.PORT || 3000; 
 
server = require('http').createServer(), 
 
io  = require('socket.io').listen(server), 
 

 
users = {}, socks = {}; 
 

 
function Uid() { this.id = ++Uid.lastid; } 
 

 
Uid.lastid = 0; 
 

 
//Handle users 
 
io.sockets.on('connection', function (socket) { 
 

 
\t // Event received by new user 
 
\t socket.on('join', function (recv) { 
 

 
\t \t if (!recv.user) { 
 
\t \t \t socket.emit('custom_error', { message: 'User not found or invalid' }); 
 
\t \t \t return; 
 
\t \t } 
 

 
\t \t // The user already exists 
 
\t \t if (users[recv.user]) { 
 
\t \t \t socket.emit('custom_error', { message: 'The user '+ recv.user +' already exists' }); 
 
\t \t \t return; 
 
\t \t } 
 

 
\t \t // If there is users online, send the list of them 
 
\t \t if (Object.keys(users).length > 0) 
 
\t \t \t socket.emit('chat', JSON.stringify({ 'action': 'usrlist', 'user': users })); 
 

 
\t \t // Set new uid 
 
\t \t uid = new Uid(); 
 
\t \t socket.user = recv.user; 
 

 
\t \t // Add the new data user 
 
\t \t users[socket.user] = {'uid': Uid.lastid, 'user': socket.user, 'name': recv.name, 'status': 'online'} 
 
\t \t socks[socket.user] = {'socket': socket} 
 

 
\t \t // Send new user is connected to everyone 
 
\t \t socket.broadcast.emit('chat', JSON.stringify({'action': 'newuser', 'user': users[socket.user]})); 
 
\t }); 
 

 
\t // Event received when user want change his status 
 
\t socket.on('user_status', function (recv) { 
 
\t \t users[socket.user].status = recv.status; 
 
\t \t socket.broadcast.emit('chat', JSON.stringify({'action': 'user_status', 'user': users[socket.user]})); 
 
\t }); 
 

 
\t // Event received when user is typing 
 
\t socket.on('user_typing', function (recv) { 
 
\t \t var id = socks[recv.user].socket.id; 
 
\t \t io.sockets.socket(id).emit('chat', JSON.stringify({'action': 'user_typing', 'data': users[socket.user]})); 
 
\t }); 
 

 
\t // Event received when user send message to another 
 
\t socket.on('message', function (recv) { 
 
\t \t var id = socks[recv.user].socket.id; 
 
\t \t var msg = {'msg': recv.msg, 'user': users[socket.user]}; 
 
\t \t io.sockets.socket(id).emit('chat', JSON.stringify({'action': 'message', 'data': msg})); 
 
\t }); 
 

 
\t // Event received when user has disconnected 
 
\t socket.on('disconnect', function() { 
 
\t \t socket.broadcast.emit('chat', JSON.stringify({'action': 'disconnect', 'user': users[socket.user]})); 
 
\t \t //socket.broadcast.emit('chat', JSON.stringify({'action': 'offline', 'user': users[socket.user]})); 
 
\t \t delete users[socket.user]; 
 
\t \t delete socks[socket.user]; 
 
\t }); 
 
}); 
 

 
//Listen to the server port 
 
server.listen(port, function() { 
 
    var addr = server.address(); 
 
    console.log('jquery-chat server listening and ready'); 
 
});

來源

2015-04-18 Lê Đôn

你有什麼錯誤嗎？這意味着什麼「但它不工作」？ –

是的，我得到一個錯誤：不能找到模塊「socket.io」在... –

然後，你沒有安裝socket.io模塊。看看這個鏈接來安裝socket.io http://socket.io/download/ –

要執行一個JavaScript使用的NodeJS就得從命令提示/終端使用node <filename>命令。

您正在使用相對路徑。將node server.js更改爲node "/full/path/to/server.js"。

例如，如果server.js位於C:\myserver\server.js，然後運行：

node "C:\myserver\server.js"

來源

2015-04-18 02:29:48

我剛剛嘗試過那樣做，但它仍然不起作用 –

當你嘗試它時，它是什麼意思？ –

未找到'socket.io'。我仍在學習nodejs，所以我不知道在哪裏找到socket.io數據包 –

你需要安裝socket.io。跑在終端：

npm install socket.io

來源

2015-04-18 04:29:33

非常感謝你 –

如何使用Node.js運行用js編寫的server.js

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