How to change new opera tab?

Question

JavaScript

I have an extension that changed the new tab page to its own. I did it by writing

"chrome_url_overrides" : {
    "newtab": "my-new-tab.html"
  }

in manifest.
It turned out that Opera does not support these keys
. I need some alternative.

Answer 1

Whenever you open a new tab, the onCreated event fires.
This event can be caught from the background script background.js
https://developer.chrome.com/docs/extensions/refer...
Accordingly, after you have caught this event, nothing prevents you from simply changing the URL of the tab where it happened event to the address you need.
There is an even simpler option: nothing prevents you from setting the address you need as the start page in the settings of the opera itself and no extensions are needed.