<script> const { webFrame, ipcRenderer } = require('electron') document.addEventListener('fullscreenchange', () => { ipcRenderer.send('fullscreenChange', webFrame.routingId) }); window.addEventListener('message', ({ data }) => { if (data === 'exitFullscreen') { document.exitFullscreen() } }) window.addEventListener('load', () => { window.focus() webFrame.executeJavaScript('document.querySelector("video").requestFullscreen()', true) }); </script> <video></video>