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.
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.
A number.
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}".`, ); };
Specification |
---|
Web Speech API # dom-speechsynthesisevent-charindex |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
charIndex |
33 | 14 | 49 | No | 21 | 7 | No | 33 | 62 | No | 7 | 3.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisEvent/charIndex