The webkitBeforeTextInserted and webkitEditableContentChanged JS events are Blink internal events and are non standard events. There are better replacement of these events which Browser vendors have been actively working on such as Input events(https://w3c.github.io/input-events/).
webkitBeforeTextInserted & webkitEditableContentChanged JS events are Blink internal and non standard events. Browser vendors have been actively working on Input Events(https://w3c.github.io/input-events/) which is a much better replacement for these non-standard events.
Explainers: N/A