ReferenceError: window is not defined chrome extension with manifest v3

[ym_developer]

Hi,

I have chrome extension in manifest V2
And I'm trying to move it to manifest  V3

The new manifesto looks like this

I have an ONLOAD function on the background page
Like this: window.onload
And I always get the error:

How do I solve this problem, I need the ONLOAD function
Thanks ,

[Browser Extenstion]

No access to window in service worker.

[Simon Bassu]

You have to use "self" instead.

I suggest this

let window = self;

Simon B

Le 25 mai 2022 à 04:46, ym_developer <yehud...@gmail.com> a écrit :

Hi,

I have chrome extension in manifest V2
And I'm trying to move it to manifest  V3

The new manifesto looks like this

<r1.JPG>

I have an ONLOAD function on the background page
Like this: window.onload
And I always get the error:

<r2.JPG>

How do I solve this problem, I need the ONLOAD function
Thanks ,

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<r2.JPG><r1.JPG>

[PhistucK]

Not sure service workers have a load event/onload property, though?

You can just run your code directly. If your code runs, that means the service worker is loaded. If you want your code to run last, call it last.

Manifest version 3 does not support background pages, it only supports service workers. That means you have no DOM, in case you need it.

☆PhistucK

To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/chromium-extensions/5C9CE1E9-03B1-436B-A2DC-A01D04CAAAA6%40gmail.com.

[FRANK G]

I don't think self is the actual window, but rather a service worker object.

You can try

chrome.scripting.executeScript({

  target: { tabId: currentTab.id },

  func: () =>window.history.back()

});

[wOxxOm]

You don't need window.onload and never needed even in MV2.

Simply remove it and use an IIFE at the end of the file:

(async () => {

  // ..........

  // ..........

})();