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入门-搭建项目 ​

1、初始化项目 ​

shell
mkdir my-electron-app && cd my-electron-app
cnpm init
cnpm install --save-dev electron

2、package.json中配置 start 命令运行 ​

json
{
  "scripts": {
    "start": "electron ."
  }
}

3、新建preload.js ​

js
window.addEventListener("DOMContentLoaded", () => {
  const replaceText = (selector, text) => {
    const element = document.getElementById(selector);
    if (element) element.innerText = text;
  };

  for (const dependency of ["chrome", "node", "electron"]) {
    replaceText(`${dependency}-version`, process.versions[dependency]);
  }
});

4、新建index.html ​

html
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8"/>
    <!-- https://developer.mozilla.org/zh-CN/docs/Web/HTTP/CSP -->
    <meta
            http-equiv="Content-Security-Policy"
            content="default-src 'self'; script-src 'self'"
    />
    <title>你好!</title>
</head>

<body>
<h1>你好!</h1>
我们正在使用 Node.js <span id="node-version"></span>, Chromium
<span id="chrome-version"></span>, 和 Electron
<span id="electron-version"></span>.

<script src="./renderer.js"></script>
</body>
</html>

5、新建main.js ​

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

const path = require("path");

const createWindow = () => {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, "preload.js"),
    },
  });

  win.loadFile("index.html");
};

app.whenReady().then(() => {
  createWindow();

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

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

6、运行 ​

shell
cnpm start