Electron Desktop App Development · 课时

您的第一个 Electron 应用

按照分步指南创建基础的“Hello World” Electron 应用，涵盖主进程和渲染进程的基础知识

您的第一个 Electron 应用 是 CoddyKit 上的免费 Electron Desktop App Development 课时。这是第 3 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Electron Desktop App Development 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Electron Desktop App Development 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Hello, Electron World!

Time to build your first Electron app — a simple desktop "Hello World." It introduces the core files that bring web tech to the desktop.

Setting Up Your Project

First, scaffold the project: make a folder, run npm init, then install Electron as a dev dependency. The commands are below.

The Main Process (main.js)

Every app has a main process — a Node.js environment that controls the lifecycle, talks to the OS, and creates windows. It starts in main.js.

main.js: Basic Window Setup

In main.js, you import Electron modules and define how to create a window that will host your web content. Try the basic setup below.

const { app, BrowserWindow } = require('electron');
const path = require('path');

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false
    }
  });
  // We'll load our HTML file here soon!
}

app.whenReady().then(createWindow);

// Handle closing all windows for non-macOS
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

// Handle re-activating app on macOS
app.on('activate', () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});

The Renderer Process (index.html)

The renderer process is where your UI lives — essentially a Chromium window rendering HTML, CSS, and JS. It loads from index.html.

index.html: Our UI Content

This index.html holds your Hello World message — just an ordinary web page, exactly like any you'd build for the browser.

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Hello Electron App</title>
    <style>
        body { font-family: sans-serif; text-align: center; padding: 50px; background-color: #f0f0f0; }
        h1 { color: #333; }
        p { color: #666; }
    </style>
</head>
<body>
    <h1>Hello from Electron!</h1>
    <p>This is your very first desktop application.</p>
</body>
</html>

Connecting Main & Renderer

Now connect the two: tell the window to display your page with win.loadFile() inside createWindow. One line wires UI to the main process.

main.js: Loading HTML

Here is main.js updated to load the page. Note how __dirname locates index.html relative to the script, no matter where it runs.

const { app, BrowserWindow } = require('electron');
const path = require('path');

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false
    }
  });

  win.loadFile(path.join(__dirname, 'index.html')); // Load the HTML file
}

app.whenReady().then(createWindow);

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate', () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});

Running Your Electron App

Add a start script to package.json so you can launch the app with one command instead of typing electron each time.

package.json: Start Script

Your package.json should look like this. "electron ." runs main.js in the current folder — save it, then run "npm start" to launch.

{
  "name": "my-electron-app",
  "version": "1.0.0",
  "description": "My first Electron app",
  "main": "main.js",
  "scripts": {
    "start": "electron ."
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "electron": "^28.0.0"
  }
}

Quick Check: Main Process Role

You've seen how main.js and index.html work together. Let's test your understanding of their primary roles.

Recap: Your First Electron App

You built your first Electron app: a main process for lifecycle and windows, a renderer for UI, wired together with a start script.

常见问题解答

「您的第一个 Electron 应用」课时是免费的吗？

是的 — 「您的第一个 Electron 应用」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Electron Desktop App Development 课程的其余内容，请升级到 CoddyKit PRO。 Electron Desktop App Development 课程共包含 4 节课。

「您的第一个 Electron 应用」这节课中我会学到什么？

按照分步指南创建基础的“Hello World” Electron 应用，涵盖主进程和渲染进程的基础知识你通过在浏览器中直接运行的动手代码来练习 Electron Desktop App Development，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Electron Desktop App Development 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Electron Desktop App Development 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 3 节课，共 4 节。

「您的第一个 Electron 应用」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Electron Desktop App Development 课中编写并运行代码吗？

能。每节 Electron Desktop App Development 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

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