Menu-菜单

1. 建立菜单js
2. 引入menu和BrowserWindow
3. 其中存在多级菜单
4. 主线程(main.js)中引入  
   require('./main/menu.js')

//menu.js
const { Menu,BrowserWindow } = require('electron')
var template = [
    {
        label: '迷迷糊糊',
        submenu: [
            //子菜单
            {
                label: '精品',
                accelerator:'ctrl+n',//快捷键 {加速器}
                click: () => {
                    //点击事件，打开新页面
                    var win = new BrowserWindow({
                         300,
                        height: 300,
                        webPreferences: { nodeIntegration: true }
                    })
                    win.loadFile('./html/yellow.html')
                    win.on("closed", () => {
                        win = null
                    })
                }
            },
            {
                label: '头昏脑胀',
                click: () => {

                }
            }
        ]
    },
    {
        label: '念奴娇',
        submenu: [
            {
                label: '赤壁怀古',
                click: () => {

                }
            },
            {
                label: '大江东去',
                click: () => {

                }
            }
        ]
    }
]

var m = Menu.buildFromTemplate(template)
Menu.setApplicationMenu(m)

 右键菜单

渲染线程加  window.addEventListener('contextmenu',(e)=>{})

通过监听右键点击事件触发事件

通过menu.popup()弹出menu菜单

//import { readFile } from 'fs'

window.onload = function () {
    var btn = this.document.querySelector('#btn')
    var div = this.document.querySelector('#the_div')
    alert("??")
    btn.onclick = function () {
        alert("启动了")
        // readFile('wendang.txt',(err,data)=>{
        //     div.innerHTML = data
        // })
    }
}

const { remote } = require('electron')
var right_template = [
    {
        label: '复制'
    },
    {
        label: '粘贴'
    }
]
var m = remote.Menu.buildFromTemplate(right_template)
window.addEventListener('contextmenu', (e) => {
    // alert(1)
    //阻止默认响应事件
    e.preventDefault()
    
    m.popup({
        window: remote.getCurrentWindow()
    })
})