歌词同步+进度可调audio播放器帖子模板（2022.6.11）

马黑黑 · 发表于 2022-6-11 23:07

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<style>
/*帖子外层盒子*/
.mama { position: relative; margin: auto; width: 1000px; height: 600px; background: transparent linear-gradient(to right bottom, darkgreen, snow); box-shadow: 2px 2px 2px #444; }
/*播放器外层盒子*/
.lrcWrap { position: absolute; top: 10px; left: 10px; padding: 20px; width: fit-content; height: fit-content; text-align: center; background: transparent linear-gradient(rgba(255,255,255,.25), rgba(255,255,255,.15)); box-shadow: 2px 2px 4px #eee; display: flex; flex-direction: column;align-items: center; }
/*播放控制外层盒子*/
.meterWrap { position: relative; display: flex; align-items: center; width: fit-content; height: 50px; }
/*播放按钮*/
.playbtn { width: 10px; height: 20px; background: #eee; clip-path: polygon(0 0, 0% 100%, 100% 50%); cursor: pointer; }
/*播放按钮鼠标滑过*/
.playbtn:hover { background: red; }
/*暂停按钮*/
.pausebtn { width: 2px; height: 20px; border-style: solid; border-width: 0px 4px; border-color: transparent #eee; display: none; cursor: pointer; }
/*暂停按钮鼠标滑过*/
.pausebtn:hover { border-color: transparent red; }
/*进度条*/
.meter { position: relative; width:300px; height: 11px; cursor: pointer; background: linear-gradient(transparent 5px, snow 6px,transparent 0); }
/*进度滑块*/
.slider { display: block; position: absolute; width: 4px; height: 100%; background: white; }
/*歌词面板外层盒子*/
.lrcWrap p { margin: 0 0 12px 0; padding: 0px; color: #ccc; font: normal 1.2em sans-serif; text-shadow: 1px 1px 1px #333; }
/*歌词区域限制层*/
.lrcBox { margin: 0; padding: 0; width: 400px; height: 72px; overflow: hidden; user-select: none; position: relative; }
/*歌词ul标签*/
.lrcUl { position: relative; top: 0; margin: 0; padding: 0; }
/*歌词li标签*/
.lrcUl li { margin: 0; padding: 0; height: 24px; font: normal 18px / 24px sans-serif; color: gray; text-shadow: 1px 1px 1px black; list-style-type: none; }
</style>
<div class="mama">
<div class="lrcWrap">
<p>帖子标题</p>
<div class="lrcBox"><ul class="lrcUl"></ul></div>
<div class="meterWrap">
<div class="playbtn"></div>
<div class="pausebtn"></div>
<div class="meter"><span class="slider"></span></div>
</div>
</div>
</div>
<audio class="aud" src="音频地址" autoplay="autoplay" loop="loop"></audio>
<script>
//N多盒子句柄
let aud = document.querySelector('.aud'),
playbtn = document.querySelector('.playbtn'),
pausebtn = document.querySelector('.pausebtn'),
meter = document.querySelector('.meter'),
slider = document.querySelector('.slider'),
lrcUl = document.querySelector('.lrcUl');
let slip = 0; //误差修正
//lrc歌词数组
let lrcAr = [
['0.00','第一句'],
['3.84','第二句'],
//...第N句
['331.05','最后一句']
];
//将歌词写入li标签
for(j=0; j<lrcAr.length; j++){
lrcUl.innerHTML += '<li id="li' + lrcAr[j][0] + '" style="list-style-type: none">' + lrcAr[j][1] + '</li>';
}
//监听进度
aud.addEventListener('timeupdate', () => {
let prog = (meter.clientWidth - slider.clientWidth) * aud.currentTime / aud.duration;
slider.style.transform = 'translate(' + prog + 'px)';
let tt = aud.currentTime;
for(j=0; j<lrcAr.length; j++){
if(tt >= lrcAr[j][0] - slip){
if(j > 0){
let idxLast = lrcAr[j-1][0];
document.getElementById('li' + idxLast).style.color = 'gray';
lrcUl.style.top = '-' + (j * 24 - 24) + 'px';
}
let idx = lrcAr[j][0];
document.getElementById('li' + idx).style.color = 'ghostwhite';
}
}
})
//监听结束事件
aud.addEventListener('ended', () => {
document.getElementById("li" + lrcAr[lrcAr.length-1][0]).style.color = 'gray';
lrcUl.style.top = 0;
})
//监听暂停与播放
aud.addEventListener('pause', () => btnstate(1));
aud.addEventListener('play',() => btnstate(0));
//进度条点击事件
meter.onclick = (e) => {
e = e || event;
aud.currentTime = (e.clientX - offset(meter,"left")) * aud.duration / meter.clientWidth;
}
//暂停与播放按钮点击事件
pausebtn.onclick = () => { aud.pause(); btnstate(1); }
playbtn.onclick = () => { aud.play(); btnstate(0); }
//获取进度条偏移总量
let offset = (obj,direction) => {
let offsetDir = "offset" + direction[0].toUpperCase() + direction.substring(1);
let realNum = obj[offsetDir];
let positionParent = obj.offsetParent;
while(positionParent != null){
realNum += positionParent[offsetDir];
positionParent = positionParent.offsetParent;
}
return realNum;
}
//按钮状态
let btnstate = (paused) => {
paused == 1 ? (playbtn.style.display = 'block', pausebtn.style.display = 'none') : (playbtn.style.display = 'none', pausebtn.style.display = 'block');
}
//初始化按钮状态
aud.paused ? btnstate(1) : btnstate(0);
</script>