html5结合javascript实现简易音乐播放器

<div id="music"> 	<div id="container"> 		<h3 id="musicName">一月，银装轻舞-紫竹笛韵</h3> 		<img src="image/一月，银装轻舞-紫竹笛韵.jpg" id="musicImg"> 		<audio src="./music/一月，银装轻舞-紫竹笛韵.mp3" controls id="audio"></audio> 		<div class="btn"> 			<button id="play">play</button> 			<button id="pause">pause</button> 			<button id="prev">prev</button> 			<button id="next">next</button> 		</div> 	</div> </div>

// 播放 play.onclick = function(){ 	if(audio.paused){ 		audio.play(); 	} }   // 暂停 pause.onclick = function(){ 	if(audio.played){ 		audio.pause(); 	} }

audio.addEventListener('ended',function(){ 	next.onclick(); },false);

// 上一首 prev.onclick = function(){ 	num = (num + len - 1) % len; 	audio.src = './music/' + music[num] + '.mp3'; 	musicName.innerHTML = music[num]; 	bgImage.style.backgroundImage = 'url(./image/' + music[num] + '.jpg)'; 	musicImg.src = './image/' + music[num] + '.jpg'; 	audio.play(); }   // 下一首 next.onclick = function(){ 	num = (num + 1) % len; 	audio.src = './music/' + music[num] + '.mp3'; 	musicName.innerHTML = music[num]; 	bgImage.style.backgroundImage = 'url(./image/' + music[num] + '.jpg)'; 	musicImg.src = './image/' + music[num] + '.jpg'; 	audio.play(); }

#music { 	width: 500px; 	height: 500px; 	border-radius: 10px; 	margin: 20px auto; 	position: relative; 	background: url(./image/一月，银装轻舞-紫竹笛韵.jpg) no-repeat; 	background-size: cover; 	text-align: center; } #container { 	position: absolute; 	left: 0; 	right: 0; 	top: 0; 	bottom: 0; 	width: 500px; 	height: 500px; 	text-align: center; 	background:rgba(255,255,255,0.6); }