WebExtension/spawn.js

//1.grant host permission
//
//


document.addEventListener("DOMContentLoaded",function(){
browser.runtime.sendMessage("Content_Loaded");
});


browser.runtime.onMessage.addListener(worker);
//	return Promise.resolve(true);
/*.then(function(){
		window.location.replace(url);
});*/
function worker(message,sender,sendResponse)
{
		console.log("inside handler");
		if(message.state != "Init")//on init only load page
				{
				document.getElementsByClassName("yt-spec-button-shape-next yt-spec-button-shape-next--filled yt-spec-button-shape-next--mono yt-spec-button-shape-next--size-m")[0].click();
				console.log(message);
				}
		let url = message.url;
		console.log(url);
		sendResponse(true);
}