SpeechSynthesisEvent: charIndex property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2018.
The charIndex read-only property of the SpeechSynthesisUtterance interface returns the index position of the character in SpeechSynthesisUtterance.text that was being spoken when the event was triggered.
Value
A number.
Examples
js
utterThis.onpause = (event) => { const char = event.utterance.text.charAt(event.charIndex); console.log( `Speech paused at character ${event.charIndex} of "${event.utterance.text}", which is "${char}".`, ); }; Specifications
| Specification |
|---|
| Web Speech API> # dom-speechsynthesisevent-charindex> |