Javascript Socket.io:";无法读取属性';发射';“未定义”的定义;
因此,我目前正在使用socket.io开发我的网站 今天,当我实现套接字时,我遇到了一个很好的小错误“无法读取未定义的属性'emit'” 我找不到我代码中的错误,所以我希望你们能帮助我 App.js:Javascript Socket.io:";无法读取属性';发射';“未定义”的定义;,javascript,jquery,node.js,sockets,socket.io,Javascript,Jquery,Node.js,Sockets,Socket.io,因此,我目前正在使用socket.io开发我的网站 今天,当我实现套接字时,我遇到了一个很好的小错误“无法读取未定义的属性'emit'” 我找不到我代码中的错误,所以我希望你们能帮助我 App.js: var socket = require( 'socket.io' ); var express = require('express'); var app = express(); var server = require('http').createServer(app); var
var socket = require( 'socket.io' );
var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = socket.listen( server );
var port = 9999;
server.listen(port, function () {
console.log('Listening at port %d', port);
});
io.sockets.on('connection', function (socket) {
console.log('User connected');
socket.on('create_socket', function(port){
console.log(port);
});
<div>
<p class="connected" hidden>Connected port : 9999</p>
<p class="connect_error" hidden><strong>Can not connect to socket on port 9999</strong></p>
</div>
<script>
var socket = io.connect("http://localhost:9999");
// If connection can not be established
socket.on('connect_error', function(socket) {
$('.connected').hide();
$('.connect_error').show();
});
// Connection established
socket.on('connect', function(socket) {
$('.connect_error').hide();
$('.connected').show();
// socket.on('create_socket', null, <?= $port; ?> );
socket.emit('create_socket', '<?= $port; ?>');
});
</script>
客户端:
var socket = require( 'socket.io' );
var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = socket.listen( server );
var port = 9999;
server.listen(port, function () {
console.log('Listening at port %d', port);
});
io.sockets.on('connection', function (socket) {
console.log('User connected');
socket.on('create_socket', function(port){
console.log(port);
});
<div>
<p class="connected" hidden>Connected port : 9999</p>
<p class="connect_error" hidden><strong>Can not connect to socket on port 9999</strong></p>
</div>
<script>
var socket = io.connect("http://localhost:9999");
// If connection can not be established
socket.on('connect_error', function(socket) {
$('.connected').hide();
$('.connect_error').show();
});
// Connection established
socket.on('connect', function(socket) {
$('.connect_error').hide();
$('.connected').show();
// socket.on('create_socket', null, <?= $port; ?> );
socket.emit('create_socket', '<?= $port; ?>');
});
</script>
连接端口:9999
无法连接到端口9999上的套接字
变量套接字=io.connect(“http://localhost:9999");
//如果无法建立连接
socket.on('connect_error',函数(socket){
$('.connected').hide();
$('.connect_error').show();
});
//建立连接
socket.on('connect',函数(socket){
$('.connect_error').hide();
$('.connected').show();
//on('create_socket',null,);
emit('create_socket','');
});
顺便说一句,所有的socket.io/jquery/。。。即使代码中没有显示包含,也会正确执行
提前感谢客户代码: 改变
// Connection established
socket.on('connect', function(socket) {
到
最终:
// Connection established
socket.on('connect', function(data) {
$('.connect_error').hide();
$('.connected').show();
console.log(data);
socket.emit('create_socket', '<?= $port; ?>');
});
//已建立连接
socket.on('connect',函数(数据){
$('.connect_error').hide();
$('.connected').show();
控制台日志(数据);
emit('create_socket','');
});
在此之前,您需要覆盖套接字对象。就像一个符咒!谢谢,先生