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javascript - mainWindow未在 Electron js中接收数据

转载 作者:行者123 更新时间:2023-12-03 12:25:19 27 4
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所以我当时用 Electron js制作了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.
`
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。那么有人可以帮助我吗?

最佳答案

  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 webContents上的事件

关于javascript - mainWindow未在 Electron js中接收数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63743655/

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