javascript - mainWindow没有在电子js中接收数据
问题描述
所以我正在使用电子js制作一个待办事项应用程序。我想在窗口加载后发送待办事项,所以我使用了
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.
`
索引.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 加载它应该显示正确的 todos 吗?但它没有。当我在 main.js 中使用 console.log(todosData.todos) 时,它将 json 文件中的 todos 记录到终端中,但从 index.html 记录时它会记录日志。这表明数据从 main.js 传输到index.html.So 任何人都可以帮我解决这个问题吗?
解决方案
mainWindow.webContents.once('dom-ready', () => {
console.log('Dom is ready')
mainWindow.webContents.send('todos',todosData.todos)
});
BrowserWindow 上没有dom-ready
事件。这是一个关于webContents
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