Drag div:
dragenter
    types: text/plain
dragover
    types: text/plain
drop
    types: text/plain
    text/plain: 'hello'
    text/uri-list: ''
    source events: dragstart,dragend:copy

Drag non-draggable div:
    drag started: false

Drag link:
dragstart
    types: text/uri-list
dragenter
    types: text/uri-list
dragover
    types: text/uri-list
drop
    types: text/uri-list
    text/plain: ''
    text/uri-list: 'https://example.com/'

Drag image:
dragstart
    types: text/uri-list
dragenter
    types: text/uri-list
dragover
    types: text/uri-list
drop
    types: text/uri-list
    text/plain: ''
    text/uri-list: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4nGP4z8DwHwAFAAH/iZk9HQAAAABJRU5ErkJggg=='

Dragstart cancelled:
dragstart (cancelling)