contentScripts.RegisteredContentScript

A RegisteredContentScript is returned by a call to contentScripts.register() and represents the content scripts registered in that call.

It defines a single function unregister(), which can be used to unregister the content scripts.

Note: If this object is destroyed (for example because it goes out of scope) then the content scripts will be unregistered automatically, so you should keep a reference to this object for as long as you want the content scripts to stay registered.

Methods

unregister()

Unregisters the content scripts represented by this object.

Examples

This code toggles a registered content script on a browser action click:

js
let registered = null;

async function register() {
  registered = await browser.contentScripts.register({
    matches: ["*://*.org/*"],
    js: [
      {
        code: "document.body.innerHTML = '<h1>This page has been eaten<h1>'",
      },
    ],
    runAt: "document_idle",
  });
}

function toggle() {
  if (registered) {
    registered.unregister();
    registered = null;
  } else {
    register();
  }
}

browser.browserAction.onClicked.addListener(toggle);

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
RegisteredContentScript
Chrome – No support
Chrome
footnote No support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 59 (Release date: 2018-03-13)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – No support
Safari
footnote No support
Firefox for Android – Full support
Firefox for Android 59 (Release date: 2018-03-13)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
unregister
Chrome – No support
Chrome
footnote No support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 59 (Release date: 2018-03-13)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – No support
Safari
footnote No support
Firefox for Android – Full support
Firefox for Android 59 (Release date: 2018-03-13)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support