ipcMain事件处理程序中的Electron TypeError

本文介绍了ipcMain事件处理程序中的Electron TypeError的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我对一件奇怪的事情有些困惑。我希望我能对此行为有所解释。I'm a little bit confused about a strange thing. I hope i get some explanation about this behaviour.这是我的小学习项目。一个简单的tcp客户端-服务器聊天程序。客户端已被写入电子文件，但尚无法正常工作。Here is my little learning project. A simple tcp client-server chat program. The client is written electron but its not working yet.我的聊天模块是：'use strict';let Socket = require('net').Socket;let EventEmitter = require('events');let util = require('util');function Chat() { EventEmitter.call(this); this.socket = new Socket({ allowHalfOpen:true }); this.socket.on('data', (data) => { let message = JSON.parse(data); if (message.isServer) { this.emit('server', message); } else { this.emit('message', message); } }); this.socket.on('error', (err) => { this.socket.destroy(); this.emit('error', err); });};Chat.prototype.join = function(port, host, user) { this.user = user; this.socket.connect(port, host, () => { this.emit('connected'); });}Chat.prototype.send = function(msg, cb) { let message = JSON.stringify({ usr: this.user, msg: msg }); this.socket.write(message, cb || null);};Chat.prototype.leave = function(cb) { this.socket.destroy(); if (typeof cb === 'function') { cb(); }};util.inherits(Chat, EventEmitter);module.exports = Chat;在电子main.js中，我尝试这样使用：In the electron main.js i tried use like this:const electron = require('electron');const ipcMain = require('electron').ipcMain;const app = electron.app; // Module to control application life.const BrowserWindow = electron.BrowserWindow; // Module to create native browser window.const Chat = require('./lib/chat');const DEFAULT_PORT = **;const DEFAULT_HOST = '**';// Report crashes to our server.electron.crashReporter.start();// Keep a global reference of the window object, if you don't, the window will// be closed automatically when the JavaScript object is garbage collected.var mainWindow = null;var chat = new Chat();// Quit when all windows are closed.app.on('window-all-closed', function() { // On OS X it is common for applications and their menu bar // to stay active until the user quits explicitly with Cmd + Q if (process.platform != 'darwin') { app.quit(); }});// This method will be called when Electron has finished// initialization and is ready to create browser windows.app.on('ready', function() { // Create the browser window. mainWindow = new BrowserWindow({width: 800, height: 600}); mainWindow.setMenu(null); mainWindow.loadURL('file://' + __dirname + '/index.html'); ipcMain.on('start-connect', function(event, uname) { chat.join(**, '*****', uname); chat.on('connected', () => { event.sender.send('connected'); }); chat.on('server', message => { event.sender.send('server', message); }); chat.on('message', (message) => { if (message.user === chat.user) { message.user = 'You'; } event.sender.send('message', message); }); ipcMain.on('submit', (event, msg) => { chat.send(msg); }); }); // Emitted when the window is closed. mainWindow.on('closed', function() { if (chat !== null) { chat = null; } mainWindow = null; });});从index.html发送完启动连接方法后，电子抛出错误：聊天。加入不是一个函数，我不知道为什么，因为事件处理程序是一个关闭权？ After from the index.html i send the start-connect method, the electron throw error: chat.join is not a function and i don't know why because the event handler is a closure right? 请帮助我：）推荐答案我有一张脸特殊的问题，当包含ipcMain时已包含I have face one particular issue, when including the ipcMain as you have included const ipcMain = require('electron').ipcMain; ipcMain在上述步骤后未定义，因此在未定义时会出现typeError。 更改库以包括ipc-main代替 const ipcMain = require（'ipc-main'）; 这篇关于ipcMain事件处理程序中的Electron TypeError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！