SpeechSynthesisUtterance.onboundary
Experimental
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The onboundary
property of the
SpeechSynthesisUtterance
interface represents an event handler that will
run when the spoken utterance reaches a word or sentence boundary (when the
boundary
event fires.)
Syntax
speechSynthesisUtteranceInstance.onboundary = function() { ... };
Examples
var synth = window.speechSynthesis;
var inputForm = document.querySelector('form');
var inputTxt = document.querySelector('input');
var voiceSelect = document.querySelector('select');
var voices = synth.getVoices();
...
inputForm.onsubmit = function(event) {
event.preventDefault();
var utterThis = new SpeechSynthesisUtterance(inputTxt.value);
var selectedOption = voiceSelect.selectedOptions[0].getAttribute('data-name');
for(i = 0; i < voices.length ; i++) {
if(voices[i].name === selectedOption) {
utterThis.voice = voices[i];
}
}
synth.speak(utterThis);
utterThis.onboundary = function(event) {
console.log(event.name + ' boundary reached after ' + event.elapsedTime + ' milliseconds.');
}
inputTxt.blur();
}
Specifications
Specification | Status | Comment |
---|---|---|
Web Speech API The definition of 'onboundary' in that specification. |
Draft |
Browser compatibility
BCD tables only load in the browser