Limited availability
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.
A Number.
rangeStart value
This example shows how to use the characterboundsupdate event and read the value of the rangeStart and rangeEnd properties.
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}.`,
);
});
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