js制作简单的音乐播放器的示例代码

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

 functionrotate(){
         vardeg=0;
         flag=1;
         timer=setInterval(function(){
           image.style.transform="rotate("+deg+"deg)";
           deg+=5;
           if(deg>360){
            deg=0;
           }
         },30);
       }

  functionimagePause(){
         clearInterval(timer);
         flag=0;
       }

 functionjindutiao(){
         //获取当前歌曲的歌长
         varlenth=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)
       }

function reducejindutiao(){
         clearInterval(timer1);
         fillbar.style.width="0";
       }

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

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

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";
       }

functionshunxu(e){
         var img=e.target;
         img1.style.border="";
         img.style.border="1pxsolid red";
         clearInterval(suijiplay);
         shunxuplay=setInterval(function(){
           if(play[index].ended){
             add();
           }
         },1000);
       }