Rn145/index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'">
    <title>Exception from webContents.send()</title>
  </head>
  <body>
    <h1>Exception from webContents.send()</h1>
  </body>
</html>

## main.js
const { app, BrowserWindow } = require('electron')
const path = require('node:path')

function createWindow () {
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js')
    }
  })
  mainWindow.loadFile('index.html');

  //----------------------------------------------------------------------
  mainWindow.on('ready-to-show', ()=>{
    try{
      mainWindow.webContents.send('CHANNEL_1', Symbol());
    }
    catch(error){
      console.log('sucessful catched', error);
    }
  })
  //----------------------------------------------------------------------

}

app.whenReady().then(() => {
  createWindow()

  app.on('activate', function () {
    if (BrowserWindow.getAllWindows().length === 0) createWindow()
  })
})

app.on('window-all-closed', function () {
  if (process.platform !== 'darwin') app.quit()
})

## preload.js
const Electron = require('electron');
Electron.ipcRenderer.on('CHANNEL_1', (event, data)=>{
  console.log(data);
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
	<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'">
	<title>Exception from webContents.send()</title>
	</head>
	<body>
	<h1>Exception from webContents.send()</h1>
	</body>
	</html>
	const { app, BrowserWindow } = require('electron')
	const path = require('node:path')

	function createWindow () {
	const mainWindow = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	preload: path.join(__dirname, 'preload.js')
	}
	})
	mainWindow.loadFile('index.html');

	//----------------------------------------------------------------------
	mainWindow.on('ready-to-show', ()=>{
	try{
	mainWindow.webContents.send('CHANNEL_1', Symbol());
	}
	catch(error){
	console.log('sucessful catched', error);
	}
	})
	//----------------------------------------------------------------------

	}

	app.whenReady().then(() => {
	createWindow()

	app.on('activate', function () {
	if (BrowserWindow.getAllWindows().length === 0) createWindow()
	})
	})

	app.on('window-all-closed', function () {
	if (process.platform !== 'darwin') app.quit()
	})
	const Electron = require('electron');
	Electron.ipcRenderer.on('CHANNEL_1', (event, data)=>{
	console.log(data);
	});