歌词同步歌曲

html代码

<div class="wrap">
<div class="imgs">
    <img src="img/1_1.jpg"/>
    <img src="img/1_2.jpg"/>
    <img src="img/1_3.jpg"/>
    <img src="img/1_4.jpg"/>
    <img src="img/1_5.jpg"/>
</div>
<ol>
    <!-- LRC格式 -->
    <dl>都选C - 赵英俊</dl>
    <dl>拥抱你 - 易烊千玺、关晓彤、王嘉</dl>
    <dl>我们都一样 - 张杰</dl>
    <dl>追梦赤子心 - 鹿晗</dl>
</ol>
<div class="box">
    <ul id="show"></ul>
</div>
<audio controls="controls" src="demo/Demo0.mp3" id="music1"></audio>
</div>

css样式

body{
    background: linear-gradient(to top left,#000033,#000088,#000033);
}
.wrap{
    width: 1050px;
    height: 650px;
    margin: 100px auto;
    position: relative;
    box-shadow: 0 0 50px #000033; 
}
.imgs{
    position: absolute;
    top: 0;
    right: 0;
    width: 800px;
    height: 100%;
    overflow: hidden;
}
.imgs img{
    transition: 2s;
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
}
.imgs img:nth-of-type(1){
    opacity: 1;
}
.box{
    width: 800px;
    height: 200px;
    overflow: hidden;
    position: absolute;
    top: 150px;
    right: 0;
    z-index: 10;
}
ul{
    width: 800px;
    position: absolute;
    list-style-type: none;
    margin: 0;
    padding: 0;
    text-align: center;
    color: deepskyblue;
    line-height: 40px;
    font-weight: 700;
    top: 80px;
}
li{
    opacity: 0.5;
}
audio{
    width: 800px;
    position: absolute;
    bottom: 0;
    right: 0;
    opacity: 0.8;
}
ol{
    list-style-type: none;
    padding: 0;
    margin: 0;
    position: absolute;
    left: 0;
    z-index: 10;
    width: 250px;
    height: 100%;
    font-size: 14px;
    background: rgba(123,104,238,0.9);
}
dl{
    height: 40px;
    background: #eee;
    margin: 5px 0;
    padding: 0 10px;
    line-height: 40px;
    font-weight: 700;
    cursor: pointer;
}

JS代码

<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
    //背景图片切换
    var imgs = document.getElementsByTagName("img");
    var k=0;
    var imgCount = 0;
    setInterval(function(){
        k++;
        if(k > imgs.length-1){
            k = 0;
        }
        imgs[imgCount].style.opacity = "0";
        imgCount = k;
        imgs[k].style.opacity = "1";
    },7000);
    
    //歌词数组
    var songWords = [];
    //时间数组
    var time = [];
    var min = [];
    var sec = [];
    //通过Ajax获取歌词
    function getData(thisIndex){
        $.ajax({
            type:"post",
            url:"song.php",
            async:true,
            data: {index: thisIndex},
            dataType: "json",
            success: function(data){
                console.log(data);
                addSongWords(data);
            }
        });
    }
    //显示第一首歌
    getData(0);
    //添加歌词
    function addSongWords(data){
        var show = document.getElementById("show");
        show.innerHTML = "";
        time = [];
        min = [];
        sec = [];
        for(var i in data){
            // 歌词
            songWords[i] = data[i][0].split("]")[1];
            time[i] = data[i][0].split("]")[0].split("[")[1];
            min[i] = time[i].split(":")[0];
            sec[i] = time[i].split(":")[1];
            show.innerHTML += "<li>"+songWords[i]+"</li>";
        }
        // 时间
        
        console.log(time,min,sec);
    }
    
    var audios = document.getElementById('music1');
    //切换歌曲
    var dls = document.getElementsByTagName("dl");
    var lisCount = 0;
    for(var i=0;i<dls.length;i++){
        dls[i].index = i;
        var dlsCount = 0;
        dls[i].onclick = function(){
            dls[dlsCount].style.background = "#eee";
            this.style.background = "#fff";
            dlsCount = this.index;
            // 图片背景相应改变
            for(var j=0;j<imgs.length;j++){
                imgs[j].src = "img/"+(this.index+1)+"_"+(j+1)+".jpg";
            }
            //歌曲相应改变
            audios.src = "demo/Demo"+this.index+".mp3";
            //保证歌词从头开始
            show.style.transform = "translateY(0px)";
            //歌词对应改变
            getData(this.index);
        }
    }
    
    //播放控制时间和歌词
    window.onload =function(){
        //事件在播放时触发
        audios.onplay=function(){
            //监听事件
            audios.addEventListener("timeupdate",function(){
                console.log(this.currentTime);
                //currentTime 实时获取播放时间
                //Number(min[i])*60 + Number(sec[i]) 
                var currTime = this.currentTime;
                for(var i in time){
                    if(currTime >= Number(min[i])*60 + Number(sec[i])){
                        player(i);
                    }
                }
            });
        }
    }
    //歌词变化
    function player(index){
        var lis = document.getElementsByTagName("li");
        for(var i=0;i<lis.length;i++){
            lis[i].style.color = "deepskyblue";
            lis[i].style.opacity = "0.5";
        }
        show.style.transform = "translateY(-"+40*index+"px)";
        if(index>=1){
            lis[index-1].style.opacity = "0.5";
            if(index>=2){
                lis[index-2].style.opacity = "0.2";
                if(index >=3){
                    lis[index-3].style.opacity = "0";
                }
            }
        }
        lis[index].style.color = "mediumspringgreen";
        lis[index].style.opacity = "1";
        // 歌词渐变
        show.style.transition = "0.5s";
    }
    
</script>

PHP代码

<?php
    //读取文件内容
    $fp = fopen("songs/songs_".$_POST['index'].".txt","a+");
    while(!feof($fp)){
        $song[] = array(fgets($fp));
    }
    fclose($fp);
    echo json_encode($song);
?>

下载地址：

https://github.com/lyyqxdi/songWords/upload/master