使用 VS2017 和 js 进行桌面程序开发 - electron 之 Hello Word

现在基于 js 和 web浏览器核心构建的 C/S 程序越来越多，比如微信桌面版（基于 duilib 和 cef）、VS CODE（基于electron）等，出于了解的目的，最近学习了 electron。electron具体是什么，可以做什么，这里不做过多的介绍，网上很多相关的介绍，这里主要介绍在VS2017下怎么进行 electron 应用程序的开发。

一、环境搭建

  • 安装 node.js 及 npm。
  • 安装 vs2017 ，必须安装 node.js web开发包。

二、创建空白 Node.js 控制台应用程序项目

创建好的项目结构入下：

三、编写 electron Hello Word

参照 https://github.com/electron/electron/blob/master/docs/tutorial/quick-start.md：

1、打开 package.json 加入：

"dependencies": {
        "electron": "^1.6.6"
    }

最后内容如下：

{
    "name": "electron-hello-word",
    "version": "0.0.0",
    "description": "ElectronHelloWord",
    "main": "app.js",
    "author": {
        "name": "Starts_2000"
    },
    "dependencies": {
        "electron": "^1.6.6"
    }
}

2、打开 app.js，输入以下内容：

'use strict';

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

// 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.
let win

function createWindow() {
    // Create the browser window.
    win = new BrowserWindow({ width: 800, height: 600 })

    // and load the index.html of the app.
    win.loadURL(url.format({
        pathname: path.join(__dirname, 'index.html'),
        protocol: 'file:',
        slashes: true
    }))

    // Open the DevTools.
    win.webContents.openDevTools()

    // Emitted when the window is closed.
    win.on('closed', () => {
        // Dereference the window object, usually you would store windows
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        win = null
    })
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', () => {
    // On macOS 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()
    }
})

app.on('activate', () => {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (win === null) {
        createWindow()
    }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

3、新建 index.html 文件

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
</head>
<body>
    <h1>Hello World!</h1>
    We are using node
    <script>document.write(process.versions.node)</script>,
    Chrome
    <script>document.write(process.versions.chrome)</script>,
    and Electron
    <script>document.write(process.versions.electron)</script>.
</body>
</html>

四、设置和运行

1、NPM 安装  electron 包

安装成功后可看到，点击解决方案上方的显示所有文件，可以看到

2、设置项目 Node.exe路径为：

.\node_modules\electron\dist\electron.exe

运行解决方案，就可以看到electron 的 Hello Word示例了：

posted @ 2017-07-17 15:51  Starts_2000  阅读(5828)  评论(3)  编辑  收藏  举报