CharacterBoundsUpdateEvent: rangeStart property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

Examples

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

Specification
EditContext API
# dom-characterboundsupdateevent-rangestart

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
rangeStart
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.