JS implements the synchronized playback function code of lyrics in web mobile music players

This article mainly shares with you an example of using native JS to implement synchronized playback of lyrics in a web mobile music player. It has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor to take a look, I hope it can help everyone.

//获取歌词文本 
var txt = document.getElementById("lrc"); 
var lrc = txt.value;//获取文本域里的值 
/*console.log(lrc);*/ 
var lrcArr = lrc.split("[");//去除[ 
/*console.log(lrcArr);*/ 
var html = "";//定义一个空变量保存文本 
for(var i=0 ; i<lrcArr.length ; i++) 
{ 
  var arr = lrcArr[i].split("]"); 
  /*console.log(arr[1]);*/ 
  var allTime = arr[0].split("."); 
  var time = allTime[0].split(":"); 
  //获取分钟 秒钟 把时间换算成秒钟 
  var timer = time[0]*60 + time[1]*1； 
  var text = arr[1]; 
  if(text) 
  { 
    html += "<p id="+timer+">"+text+"</p>" 
  } 
  con.innerHTML = html     <pre class="html" name="code">}

实现歌词同步首先要获取到文本框 再配合H5中新增的属性如图 其实很简单啦！

    //监听音乐播发进度实现歌词同步 
myMusic.addEventListener("timeupdate",function(){ 
  //获取当前播放时间 
  var curTime = parseInt(this.currentTime)； 
  if(document.getElementById(curTime)) 
  { 
    for(var i=0 ; i<oP.length ; i++) 
    { 
oP[i].style.cssText = "color:#ccc;font-size:12px;"; 
    } 
    document.getElementById(curTime).style.cssText="color:rgb(242,110,111);font-size:18px;"; 
    if (oP[num+7].id == curTime)//判断成功一次num++ 
    { 
con.style.top = -20*num +"px"; 
num++; 
    } 
  } 
});

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