var music = document.getElementById("music");  //獲取音頻元素
music.play();    //播放音樂
music.pause();   //暫停音樂

<button onclick="playMusic()">Play</button>
<button onclick="pauseMusic()">Pause</button>
function playMusic() {
var music = document.getElementById("music");
music.play();
}
function pauseMusic() {
var music = document.getElementById("music");
music.pause();
}