<audio id="play1">
   <source src="auto/旅行.mp3"></source>
</audio>
<audio id="play2">
   <source src="auto/薛明媛,朱贺 - 非酋.mp3"></source>
</audio>
<audio id="play3">
   <source src="auto/杨宗纬 - 越过山丘.mp3"></source>
</audio>

play1=document.getElementById("play1");
play2=document.getElementById("play2");
play3=document.getElementById("play3");
play=[play1,play2,play3];

 //点击播放、暂停
  function start(){
   minute=0;
    if(flag){
      imagePause();
      play[index].pause();
     }else{
      rotate();
      play[index].play();
      reducejindutiao();
      addtime();
      jindutiao();
      for (var i=0;i<play.length;i++) {
        audioall[i].style.color="white";
         }
      audioall[index].style.color="red";
     }
 }

//图片旋转，每30毫米旋转5度
  function rotate(){
    var deg=0;
    flag=1;
    timer=setInterval(function(){
    image.style.transform="rotate("+deg+"deg)";
      deg+=5;
       if(deg>360){
        deg=0;
        }
    },30);
 }

function imagePause(){
    clearInterval(timer);
    flag=0;
 }

function jindutiao(){
   //获取当前歌曲的歌长
   var lenth=play[index].duration;
    timer1=setInterval(function(){
    cur=play[index].currentTime;//获取当前的播放时间
     fillbar.style.width=""+parseFloat(cur/lenth)*300+"px";
      },50)
}

//播放时间
   function addtime(){
      timer2=setInterval(function(){
       cur=parseInt(play[index].currentTime);//秒数
        var temp=cur;
       minute=parseInt(temp/60);
       if(cur%60<10){
       time.innerHTML=""+minute+":0"+cur%60+"";
        }else{
            time.innerHTML=""+minute+":"+cur%60+"";
         }
      },1000);
}

 //上一曲
  function reduce(){
          qingkong();
          reducejindutiao();
          pauseall();
          index--;
          if(index==-1){
            index=play.length-1;
          }
          start();
        }
        //下一曲
        function add(){
          qingkong();
          reducejindutiao();
          pauseall();
          index++;
          if(index>play.length-1){
            index=0;
          }
          start();
        }

 //点击文字切歌
        function change(e){
          var musicName=e.target;
          //先清空所有的
          for (var i=0;i<audioall.length;i++) {
            audioall[i].style.color="white";
            if(audioall[i]==musicName){
              musicName.style.color="red";
              qingkong();
              reducejindutiao();
              pauseall();
              index=i;
              start();
            }
          }
        }

//将进度条置0
 function reducejindutiao(){
     clearInterval(timer1);
      fillbar.style.width="0";
 }

 //音乐停止
   function pauseall(){
        for (var i=0;i<play.length;i++) {
            if(play[i]){
              play[i].pause();
            }
          }
        }

 function qingkong(){//清空所有的计时器
    imagePause();
    clearInterval(timer2);
 }

//调整播放进度
 function adjust(e){
   var bar=e.target;
   var x=e.offsetX;
   var lenth=play[index].duration;
   fillbar.style.width=x+"px";
   play[index].currentTime=""+parseInt(x*lenth/300)+"";
   play[index].play();
}

 //调整音量大小
  function changeVolume(e){
    var x=e.offsetX+20;
    play[index].volume=parseFloat(x/200)*1;
    //改变按钮的位置
     volume3.style.left=""+x+"px";
}

 //随机播放歌曲
  function suiji(e){
          var img=e.target;
          img2.style.border="";
          img.style.border="1px solid red";
        }
        //顺序播放
        function shunxu(e){
          var img=e.target;
          img1.style.border="";
          img.style.border="1px solid red";
          clearInterval(suijiplay);
          shunxuplay=setInterval(function(){
            if(play[index].ended){
              add();
            }
          },1000);
        }