myApp/preload.js

const { contextBridge, ipcRenderer } = require('electron');


contextBridge.exposeInMainWorld('electronAPI', {
  openWindow: (msg) => ipcRenderer.invoke('openWindow', msg),
  closeAllWindow: (msg) => ipcRenderer.send('closeAllWindow', msg),
  getData: (msg) => ipcRenderer.send('getData', msg),
  postData: (msg) => ipcRenderer.send('postData', msg),
  setProxy: (msg) => ipcRenderer.send('setProxy', msg),
  addPreLoadCode: (msg) => ipcRenderer.send('addPreLoadCode', msg),
  setStoData: (msg) => ipcRenderer.send('setStoData', msg),
  getStoData: (msg) => ipcRenderer.send('getStoData', msg),
  closeWindow: (msg) => ipcRenderer.send('closeWindow', msg),
  changeProxy: (msg) => ipcRenderer.send('changeProxy', msg),
  readConfig: (msg) => ipcRenderer.send('readConfig', msg),
  saveConfig: (msg) => ipcRenderer.send('saveConfig', msg),
  setMaxWindowOpenNum: (msg) => ipcRenderer.send('setMaxWindowOpenNum', msg),
  readdir: (msg) => ipcRenderer.send('readdir', msg),
  download: (msg) => ipcRenderer.send('download', msg),
  broadcast: (msg) => ipcRenderer.send('broadcast-message', msg),
  onBroadcast: (callback) => ipcRenderer.on('message-broadcast', (event, data) => callback(data)),
});


// window.open = (url)=>{console.log(url)}
window.lastText = ''
window.lastText2 = ''
setInterval(() => {
  // 快手
  if (document.querySelectorAll('.virt-list__client .comment-cell')[0]) {
    let nowMessage = document.querySelectorAll('.virt-list__client .comment-cell')[document.querySelectorAll('.virt-list__client .comment-cell').length - 1]
    let nowText = nowMessage.querySelector('.comment').innerText
    if (window.lastText !==  nowText) {
        window.lastText =  nowText
        console.log(nowText)
        ipcRenderer.send('broadcast-message', nowText)
    }
  }
  // 抖音
  const chatroom = document.querySelectorAll('.webcast-chatroom .webcast-chatroom___content-with-emoji-text')
  if (chatroom[0]) {
    const userNameItem = document.querySelectorAll('.webcast-chatroom .hts-live-text-user')
    let nowText = chatroom[chatroom.length - 1].innerText
    let nowUser = ''
    if (userNameItem[userNameItem.length - 1]) userNameItem[userNameItem.length - 1].innerText
    if (window.lastText !==  nowText) {
        window.lastText =  nowText
        console.log(nowText)
        ipcRenderer.send('broadcast-message', nowUser.replace('@', '') + '：' + nowText)
    }
    
  } else if (document.querySelectorAll('.TNg5meqw')[0]) {
    let nowMessage = document.querySelectorAll('.TNg5meqw')[document.querySelectorAll('.TNg5meqw').length - 1]
    let nowText = nowMessage.innerText
    if (window.lastText !==  nowText) {
        window.lastText =  nowText
        console.log(nowText)
        ipcRenderer.send('broadcast-message', nowText)
    }
  }

  // 抖音提醒
  let dyAlertBox = document.querySelectorAll('.webcast-chatroom___list')
  if (dyAlertBox[1] && dyAlertBox[1].innerText) {
    
    if (window.lastText2 !==  dyAlertBox[1].innerText) {
        window.lastText2 =  dyAlertBox[1].innerText
        ipcRenderer.send('broadcast-message', dyAlertBox[1].innerText)
    }
  }
  
  
  // 巨量
  if (document.querySelector('#comment-list-wrapper')) {
    let timingList = document.querySelectorAll('#comment-list-wrapper>[elementtiming="element-timing"]')
    let nowMessage = timingList[timingList.length - 1]
    if (!nowMessage.innerText.includes('主播')) {
      let nowText = nowMessage.innerText.replace(nowMessage.querySelector('span').innerText, '')
      if (window.lastText !==  nowText) {
          window.lastText =  nowText
          console.log(nowText)
          ipcRenderer.send('broadcast-message', nowText)
      }
    }
    
  }
}, 1000);