SpeechSynthesisEvent: elapsedTime property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2018.
TheelapsedTime read-only property of theSpeechSynthesisEvent returns the elapsed time in seconds, after theSpeechSynthesisUtterance.text started being spoken, at which theevent was triggered.
Value
A float containing the elapsed time, in seconds.
Note:Early versions of the specification required the elapsed time in milliseconds.Check thecompatibility table below for your browser.
Examples
js
utterThis.onboundary = (event) => { console.log( `${event.name} boundary reached after ${event.elapsedTime} seconds.`, );};Specifications
| Specification |
|---|
| Web Speech API # dom-speechsynthesisevent-elapsedtime |