The elapsedTime
read-only property of the SpeechSynthesisEvent
returns the elapsed time in seconds, after the SpeechSynthesisUtterance.text
started being spoken, at which the event was triggered.
The elapsedTime
read-only property of the SpeechSynthesisEvent
returns the elapsed time in seconds, after the SpeechSynthesisUtterance.text
started being spoken, at which the event was triggered.
A float containing the elapsed time, in seconds.
Note: Early versions of the specification required the elapsed time in milliseconds. Check the compatibility table below for your browser.
js
utterThis.onboundary = (event) => { console.log( `${event.name} boundary reached after ${event.elapsedTime} seconds.`, ); };
Specification |
---|
Web Speech API # dom-speechsynthesisevent-elapsedtime |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
elapsedTime |
33 | 14 | 49 | No | 21 | 7 | No | 33 | 62 | No | 7 | 3.0 |
milliseconds |
33 | 14 | 49–95Windows and macOS only. |
No | 21 | 7–14.1 | No | 33 | No | No | 7–14.5 | 3.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisEvent/elapsedTime