The read-only charLength
property of the SpeechSynthesisEvent
interface returns the number of characters left to be spoken after the character at the charIndex
position.
If the speech engine can't determine it, it returns 0.
The read-only charLength
property of the SpeechSynthesisEvent
interface returns the number of characters left to be spoken after the character at the charIndex
position.
If the speech engine can't determine it, it returns 0.
An integer.
js
utterThis.onpause = (event) => { const char = event.utterance.text.charAt(event.charIndex); const charLeft = event.charLength; if (charLeft) { console.log( `Speech paused. There are still ${charLeft} characters to be spoken.`, ); } else { console.log( "Speech paused. The underlying speech engine can't tell how many characters are left.", ); } };
Specification |
---|
Web Speech API # dom-speechsynthesisevent-charlength |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
charLength |
77 | 15 | 53 | No | 64 | 16 | No | 77 | 62 | No | 16 | 12.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisEvent/charLength