mainWindow未在电子js中接收数据

问题描述

所以我当时正在使用电子js制作待办事项应用程序。我想在窗口加载后发送待办事项，以便使用

main.js

'use strict'

const { app,browserWindow } = require('electron');
const path = require('path');
const DataStore  = require('./DataStore');
const { ipcMain } = require('electron');

const todosData = new DataStore({ 'name':'Todo Mains'});
// Handle creating/removing shortcuts on Windows when installing/uninstalling.
if (require('electron-squirrel-startup')) { // eslint-disable-line global-require
  app.quit();
}

const createWindow = () => {
  // Create the browser window.
  const mainWindow = new browserWindow({
    width: 800,height: 600,webPreferences:{
      nodeIntegration:true
    }
  });

  // and load the index.html of the app.
  mainWindow.loadFile(path.join(__dirname,'index.html'));

  // Open the DevTools.
  mainWindow.webContents.openDevTools();

  console.log(todosData.todos)

  mainWindow.once('dom-ready',() => {
    console.log('Dom is ready')
    mainWindow.webContents.send('todos',todosData.todos)
  });

};

// 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,except on macOS. There,it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed',() => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate',() => {
  // On OS X 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 (browserWindow.getAllWindows().length === 0) {
    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 import them here.
`

index.html

<script>
    const { ipcRenderer } = require('electron')
    
    ipcRenderer.on('todos',(event,todos) => {
      const todoList = document.getElementById('todo-Lists')
      if(!todoList){
        console.log('not there')
      }
      else{
        console.log(todoList)
        console.log('there')
      }
      const todoItems = todos.reduce((html,todo) => {
        html += "<li id='todo-items'>${todo}</li>"
        return html
      },'')

      todoList.innerHTML = todoItems()
    })
  
  </script>
  </html>

所以现在当dom加载时，它应该显示正确的待办事项？当我在main.js中使用console.log（todosData.todos）时，它将待办事项从json文件记录到终端中，但是从index.html登录时却记录了日志，这表明数据主体已从main.js传输到index.html。那么有人可以帮我吗？

解决方法

  mainWindow.webContents.once('dom-ready',() => {
    console.log('Dom is ready')
    mainWindow.webContents.send('todos',todosData.todos)
  });

BrowserWindow上没有dom-ready事件。这是webContents

上的事件

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