Video auto play

demo.js

/*
 * Autoplay policy in Chrome - Chrome for Developers 
 * https://developer.chrome.com/blog/autoplay/#example_scenarios 
 *
 * Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first.
 * https://stackoverflow.com/a/68128950/7738653
 */

const video = document.querySelector("video");

if (!video) return;

const promise = video.play();
if (promise !== undefined) {
	promise.then(() => {
		// Autoplay started
	}).catch(error => {
		// Autoplay was prevented.
		video.muted = true;
		video.play();
	});
}