JavaScriptSpeechSynthesis/index.html at master · Nitij/JavaScriptSpeechSynthesis · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>

    Select Voice: <select id='voiceList'></select> <br><br>

    <input id='txtInput' /> <br><br>
    <button id='btnSpeak'>Speak!</button>

    <script>
        var txtInput = document.querySelector('#txtInput');
        var voiceList = document.querySelector('#voiceList');
        var btnSpeak = document.querySelector('#btnSpeak');
        var synth = window.speechSynthesis;
        var voices = [];

        PopulateVoices();
        if(speechSynthesis !== undefined){
            speechSynthesis.onvoiceschanged = PopulateVoices;
        }

        btnSpeak.addEventListener('click', ()=> {
            var toSpeak = new SpeechSynthesisUtterance(txtInput.value);
            var selectedVoiceName = voiceList.selectedOptions[0].getAttribute('data-name');
            voices.forEach((voice)=>{
                if(voice.name === selectedVoiceName){
                    toSpeak.voice = voice;
                }
            });
            synth.speak(toSpeak);
        });

        function PopulateVoices(){
            voices = synth.getVoices();
            var selectedIndex = voiceList.selectedIndex < 0 ? 0 : voiceList.selectedIndex;
            voiceList.innerHTML = '';
            voices.forEach((voice)=>{
                var listItem = document.createElement('option');
                listItem.textContent = voice.name;
                listItem.setAttribute('data-lang', voice.lang);
                listItem.setAttribute('data-name', voice.name);
                voiceList.appendChild(listItem);
            });

            voiceList.selectedIndex = selectedIndex;
        }
    </script>
</body>
</html>