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
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 33 | (Yes) | 49 (49) | No support | ? | 7 |
Feature | Android | Chrome | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | No support | 2.0 | No support | No support | 7.1 |