SpeechSynthesisEvent: elapsedTime property

{{APIRef("Web Speech API")}}

The elapsedTime read-only property of the {{domxref("SpeechSynthesisEvent")}} returns the elapsed time in seconds, after the {{domxref("SpeechSynthesisUtterance.text")}} started being spoken, at which the event was triggered.

Value

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.

Examples

utterThis.onboundary = (event) => {
  console.log(
    `${event.name} boundary reached after ${event.elapsedTime} seconds.`,
  );
};

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Web Speech API