javascript 如何使用滑块更改 HTML5 音频音量或轨道位置？
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时间：2020-10-27 19:13:05 来源:igfitidea点击:
How to Change the HTML5-audio Volume or Track Position with a Slider?
提问by Roko C. Buljan
I know about the .play(), and the .stop()methods.
But is there a way to link up a slider to the volume? Or a slider to the track position? Is that possible?
And help is appreciated. Thanks!
我知道.play(), 和.stop()方法。
但是有没有办法将滑块链接到音量？或滑块到轨道位置？那可能吗？
并感谢帮助。谢谢！
回答by Roko C. Buljan
jQuery UImakes it quite simple:
jQuery UI让它变得非常简单：
$(function() {
var $aud = $("#audio"),
$pp = $('#playpause'),
$vol = $('#volume'),
$bar = $("#progressbar"),
AUDIO= $aud[0];
AUDIO.volume = 0.75;
AUDIO.addEventListener("timeupdate", progress, false);
function getTime(t) {
var m=~~(t/60), s=~~(t % 60);
return (m<10?"0"+m:m)+':'+(s<10?"0"+s:s);
}
function progress() {
$bar.slider('value', ~~(100/AUDIO.duration*AUDIO.currentTime));
$pp.text(getTime(AUDIO.currentTime));
}
$vol.slider( {
value : AUDIO.volume*100,
slide : function(ev, ui) {
$vol.css({background:"hsla(180,"+ui.value+"%,50%,1)"});
AUDIO.volume = ui.value/100;
}
});
$bar.slider( {
value : AUDIO.currentTime,
slide : function(ev, ui) {
AUDIO.currentTime = AUDIO.duration/100*ui.value;
}
});
$pp.click(function() {
return AUDIO[AUDIO.paused?'play':'pause']();
});
});#player{
position:relative;
margin:50px auto;
width:300px;
text-align:center;
font-family:Helvetica, Arial;
}
#playpause{
border:1px solid #eee;
cursor:pointer;
padding:12px 0;
color:#888;
font-size:12px;
border-radius:3px;
}
#playpause:hover{
border-color: #ccc;
}
#volume, #progressbar{
border:none;
height:2px;
}
#volume{
background:hsla(180,75%,50%,1);
}
#progressbar{
background:#ccc;
}
.ui-slider-handle{
border-radius:50%;
top: -5px !important;
width: 11px !important;
height: 11px !important;
margin-left:-5px !important;
}<link rel="stylesheet" href="//code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-3.1.0.js"></script>
<script src="//code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<div id="player">
<audio id="audio" src="http://upload.wikimedia.org/wikipedia/en/4/45/ACDC_-_Back_In_Black-sample.ogg" autoplay loop>
<p>Your browser does not support the audio element </p>
</audio>
<div id="volume"></div><br>
<div id="progressbar"></div><br>
<div id="playpause"></div>
</div>