我一直在学习如何为某些曲目创建媒体播放器的教程。 一切都按我想要的工作，除了每首歌播放然后停止...我希望整个播放列表都播放... 这是下一条音轨在上一条音轨完成后自动开始播放...
我读到我应该结合使用事件侦听器和'ended（）'方法...尽管我尝试没有成功。任何帮助，将不胜感激...
这是我的代码... HTML：
<html>
<head>
<title>HTML5 Audio Player</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div id="container">
<div id="audio-image">
<img class="cover">
</div>
<div id="audio-player">
<div id="audio-info">
<span class="artist"></span> - <span class="title"></span>
</div>
<input id="volume" type="range" min="0" max="10" value="4">
<br>
<div id="buttons">
<span>
<button id="prev"></button>
<button id="play"></button>
<button id="pause"></button>
<button id="stop"></button>
<button id="next"></button>
</span>
</div>
<div class="clearfix"></div>
<div id="tracker">
<div id="progress-bar">
<span id="progress"></span>
</div>
<span id="duration">0:00</span>
</div>
<div class="clearfix"></div>
<ul id="playlist" class="hidden">
<li song="advert-1.mp3" cover="cover1.jpg" artist="Miss Ramos">advert-1.mp3</li>
<li song="advert-2.mp3" cover="cover1.jpg" artist="Miss Ramos">advert-2.mp3</li>
<li song="advert-3.mp3" cover="cover1.jpg" artist="Miss Ramos">advert-3.mp3</li>
<li song="advert-4.mp3" cover="cover1.jpg" artist="Miss Ramos">advert-4.mp3</li>
<li song="audiobook-part-1.mp3" cover="cover1.jpg" artist="Miss Ramos">audiobook-part-1.mp3</li>
<li song="audiobook-part-2.mp3" cover="cover1.jpg" artist="Miss Ramos">audiobook-part-2.mp3</li>
<li song="telephon-1.mp3" cover="cover1.jpg" artist="Miss Ramos">telephon-1.mp3</li>
</ul>
</div>
</div>
<script src="js/jquery-3.5.1.js"></script>
<script src="js/main.js"></script>
</body>
</html>
CSS：
*{
margin:0;
padding:0;
border:none;
outline:none;
}
body{
font-family:Arial;
font-size:13px;
line-height:1.5em;
color:#fff;
background:#78284a; /* old browsers */
background:-moz-linear-gradient(left, #78284a 0%, #6d8a9f 100%); /* FF3.6+ */
background:-webkit-gradient(linear, left top, right top, color-stop(0%,#78284a), color-stop(100%,#6d8a9f));
background:-webkit-linear-gradient(left, #78284a 0%, #6d8a9f 100%); /* Chrome10+, Safari5.1+ */
background:-o-linear-gradient(left, #78284a 0%, #6d8a9f 100%); /* Opera 11.10+ */
background:-ms-linear-gradient(left, #78284a 0%, #6d8a9f 100%); /* IE10+ */
background:linear-gradient(to right, #78284a 0%, #6d8a9f 100%); /* W3C */
}
.clearfix{
clear:both;
}
#container{
width:330px;
min-height:400px;
background:#333;
overflow:auto;
margin:20px auto;
border-radius:10px;
box-shadow:0 10px 8px -8px #333;
}
#audio-image{
position:relative;
overflow:hidden;
height:200px;
margin-bottom:15px;
}
#audio-image .cover{
width:100%;
}
#audio-info{
text-align:center;
margin-bottom: 7px; // added by self;
}
#audio-info .artist{
font-weight:bold;
}
input#volume{
width:95%;
margin-left:2%;
/* -webkit-appearance:none !important; browser vol sytles overridden in vid*/
background:#ccc;
height:1px;
margin-bottom:20px;
}
input#volume::-webkit-slider-thumb{
/*
-webkit-appearance:none !important; browser volume styles overriden in vid
background:url(../images/knob.png) no-repeat; knob png required
*/
height:12px;
width:12px;
}
#buttons{
width:90%;
display:block;
margin:15px auto;
margin-left:23px;
overflow:auto;
}
button#play{
width:50px; /*vid values set to 70px*/
height:50px; /*vid values set to 70px*/
background:url(../images/circled-play.png);
background-size:cover; /*look for background short-hand*/
background-repeat:no-repeat;
background-position:center center;
float:left;
margin-left:-2px;
}
button#pause{
width:50px; /*vid values set to 70px*/
height:50px; /*vid values set to 70px*/
background:url(../images/circled-pause.png);
background-size:cover; /*look for background short-hand*/
background-repeat:no-repeat;
background-position:center center;
float:left;
margin-left:-2px;
}
button#stop{
width:50px; /*vid values set to 70px*/
height:50px; /*vid values set to 70px*/
background:url(../images/stop-circled.png);
background-size:cover; /*look for background short-hand*/
background-repeat:no-repeat;
background-position:center center;
float:left;
margin-left:3px;
}
button#prev{
width:50px; /*vid values set to 70px*/
height:50px; /*vid values set to 70px*/
background:url(../images/rewind-button-round.png);
background-size:cover; /*look for background short-hand*/
background-repeat:no-repeat;
background-position:center center;
float:left;
margin-top:0; /*vid set to 15px*/
}
button#next{
width:50px; /*vid values set to 70px*/
height:50px; /*vid values set to 70px*/
background:url(../images/fast-forward-round.png);
background-size:cover; /*look for background short-hand*/
background-repeat:no-repeat;
background-position:center center;
float:left; /*vid value set 'right'*/
margin-left:0px; /*vid value set 15px*/
}
#tracker{
position:relative;
width:100%;
}
#progress-bar{
width:80%;
margin-left:2%; /*vid set to 2% */
margin-bottom:20px;
margin-top:9px;
height:10px;
background:url(../images/progress-bar.png) no-repeat;
float:left;
}
#progress{
background:url(../images/ ) no-repeat; /* remember to update this selector (watch chap45 @ 08:36) */
height:10px;
display:inline-block;
}
#duration{
position:absolute;
top:0;
right:10px;
padding: 4px 8px;
background:#000;
border-radius:5px;
}
#playlist{
list-style:none;
}
#playlist li{
cursor:pointer;
margin:5px;
}
#playlist li.active{
font-weight:bold;
padding:3px;
background:#666;
}
Javascript [main.js]
var audio;
//Hide Pause
$('#pause').hide();
initAudio($('#playlist li:first-child'));
function initAudio(element){
var song = element.attr('song');
var title = element.text();
var cover = element.attr('cover');
var artist = element.attr('artist');
//Create audio object
audio = new Audio('media/'+ song);
//Insert audio info
$('.artist').text(artist);
$('.title').text(title);
//Insert song cover
$('img.cover').attr('src','images/covers/'+cover);
$('#playlist li').removeClass('active');
element.addClass('active');
}
//Play button
$('#play').click(function(){
audio.play();
$('#play').hide();
$('#pause').show();
showDuration();
});
//Pause button
$('#pause').click(function(){
audio.pause();
$('#play').show();
$('#pause').hide();
});
//Stop button
$('#stop').click(function(){
audio.pause();
audio.currentTime = 0;
});
//Next button
$('#next').click(function(){
audio.pause();
var next = $('#playlist li.active').next();
if(next.length == 0){
next = $('playlist li:first-child');
}
initAudio(next);
audio.play();
showDuration();
});
//Prev button
$('#prev').click(function(){
audio.pause();
var prev = $('#playlist li.active').prev();
if(prev.length == 0){
prev = $('playlist li:last-child');
}
initAudio(prev);
audio.play();
showDuration();
});
//Playlist song click
$('#playlist li').click(function(){
audio.pause();
initAudio($(this));
$('#play').hide();
$('#pause').show();
audio.play();
showDuration();
});
//Volume control
$('#volume').change(function(){
audio.volume = parseFloat(this.value / 10);
});
//Time/Duration
function showDuration() {
$(audio).bind('timeupdate',function(){
//Get hours and minutes
var s = parseInt(audio.currentTime % 60);
var m = parseInt(audio.currentTime / 60) % 60;
if(s < 10) {
s = '0'+s;
}
$('#duration').html(m + ':'+ s);
var value = 0;
if(audio.currentTime > 0){
value = Math.floor((100 / audio.duration) * audio.currentTime);
}
$('progress').css('width',value+'%');
});
}
所有媒体和图像都运行良好...我对到目前为止所拥有的一切感到满意。只是上述曲目列表没有从头到尾依次播放的问题。
非常感谢...
答案 0 :(得分：0)
您可以将AddEventListener与结束事件一起使用
audio.addEventListener('ended',function(){
var next = $('#playlist li.active').next();
if(next.length == 0){
next = $('playlist li:first-child');
}
initAudio(next);
audio.play();
showDuration();
});
您可以将其放在initAudio函数中