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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">   <title>Web Speech API</title> </head> <body>   <h1>Speech Synthesis</h1>   <textarea>你好,世界!</textarea>   <br />   <button id="speakButton">Speak</button>   <button id="stopButton">Stop</button>   <script>     if ('speechSynthesis' in window) {              const synth = window.speechSynthesis;
        document.getElementById('speakButton').addEventListener('click', () => {                  const text = document.querySelector('textarea').value;                  synth.cancel();                  const utterance = new SpeechSynthesisUtterance(text);                  utterance.lang = 'zh-TW';                  utterance.voice = synth.getVoices().find(voice => voice.name === 'Google 國語(臺灣)');                  synth.speak(utterance);       });
        document.getElementById('stopButton').addEventListener('click', () => {                  synth.cancel();       });     } else {       alert('Web Speech API is not supported.');     }   </script> </body> </html>
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