CharacterBoundsUpdateEvent: rangeStart property

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The CharacterBoundsUpdateEvent.rangeStart read-only property represents the offset of the first character within the editable text region for which the operating system needs the bounds.

Value

A Number.

Examples

undefined

Reading the rangeStart value

This example shows how to use the characterboundsupdate event and read the value of the rangeStart and rangeEnd properties.

js
const editContext = new EditContext();
editorElement.editContext = editContext;

editContext.addEventListener("characterboundsupdate", (e) => {
  console.log(
    `The OS needs the bounds of the chars at ${e.rangeStart} - ${e.rangeEnd}.`,
  );
});

Specifications