javascript - Can an extension close a tab? -

this in continuation of: script close current tab in chrome

i'm trying in extension instead of tampermonkey script, have "matches" : ["*://*.youtube.com/*", "*://youtube.com/*"], in manifest file, , js script chrome.tabs.remove(tab.id); or window.close(); both don't close youtube.com page open.

could it's impossible close tab extension?

chrome.tabs not available content scripts, if that's in code, fails exception.

window.close has caveat:

this method allowed called windows opened script using window.open() method. if window not opened script, following error appears in javascript console: scripts may not close windows not opened script.

i'm not sure if applies content scripts - suppose does.

you can make work adding background script (that has access chrome.tabs) , either detect navigation there, or message background script context script it.

1. messaging background:

   // content script chrome.runtime.sendmessage({closethis: true});  // background script chrome.runtime.onmessage.addlistener(function(message, sender, sendresponse) {   if(message.closethis) chrome.tabs.remove(sender.tab.id); }); 

   i recommend adding "run_at": "document_start" content script's configuration, fires earlier.

2. better yet, don't need content script. either rely on chrome.tabs events, or chrome.webnavigation api. need host permission (e.g. "*://*.youtube.com/*") work (and "webnavigation" if use it).