Why doesn't document.addEventListener('load', function) work in a greasemonkey script?

Question

It doesn\'t give an error, and I put a console.log(\'loaded userscript wifi-autologin\'), the console.log works, but the intended effect of the doc

Answer 1

According to HTML living standard specification, the load event is

Fired at the Window when the document has finished loading; fired at an element containing a resource (e.g. img, embed) when its resource has finished loading

I.e. load event is not fired on document object.

Credit: Why does document.addEventListener(‘load’, handler) not work?