This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The elapsedTime
read-only property of the SpeechSynthesisUtterance
interface returns the elapsed time in seconds after the SpeechSynthesisUtterance.text
started being spoken that the event was triggered at.
Syntax
event.elapsedTime;
Value
A float.
Examples
utterThis.onboundary = function(event) { console.log(event.name + ' boundary reached after ' + event.elapsedTime + ' seconds.'); }
Specifications
Specification | Status | Comment |
---|---|---|
Web Speech API The definition of 'elapsedTime' in that specification. |
Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
elapsedTime | Chrome Full support 33 | Edge Full support 14 | Firefox Full support 49 | IE No support No | Opera Full support 21 | Safari Full support 7 | WebView Android No support No | Chrome Android Full support 33 | Firefox Android
Full support
62
| Opera Android No support No | Safari iOS Full support 7 | Samsung Internet Android Full support 3.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.