no_name on Nostr: cors cares how you write javascript same result, different approach, first one ...

cors cares how you write javascript
same result, different approach,
first one however is not allowed because security! what?

cors error, doesnt work:

let el = document.createElement(type)
el.id = event.id + "_" + index
el.onload = media_load
link_el.append(el.outerHTML)
container.append(link_el)

vs

this one works, no problem firefox:

let el = document.createElement(type)
el.id = event.id + "_" + index
link_el.innerHTML += el.outerHTML
container.append(link_el)
let media_el = document.getElementById(el.id)
media_el.onload = media_load