Modern page subsite logo home link

Question

I have created subsites below my main SharePoint Online site, and I want to use the "modern" style to them (as their respective start page). No custom master page involved.

On clicking the logo top left, I am by default directed to the subsite itself, but I want to be directed to the main site again, like a Home link. This should be very simple. But what is the simplest way?

EDIT: I realize that I need to make an spfx extension or spfx webpart to accomplish this, for a "modern" page. Any guidance is welcome. Maybe something like the old script editor is the way to do it?

Answer 1

There seems to be no solution to this other than altering the masterpage or adding custom javascript (spfx extensions for modern) that changes the url every time a user loads the subsite.

I would recommend that you start here: Getting started. You would probably end up putting it in the top placeholder with code that replaces the href tag on the anchor element. Something like this.

var logoLink = document.querySelector('a.ms-siteLogo-defaultLogo');
logoLink.href = 'https://sitecollectionurl.sharepoint.com/sites/a';

Have a look in this sharepoint stackexchange thread where exactly this question has been answered but for classic experience: Change the location that the site page logo points to.