Audio Seek and Volume Range Slider Tutorial
In this part of the Audio Workshop we demonstrate how the range slider input can be used as a seek slider and a volume slider. We will also demonstrate how you can try to achieve a consistent range slider input appearance across different browsers.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
body{ background:#666; }
button{ border:none; cursor:pointer; outline:none; }
input{ outline:none; }
button#playpausebtn{
background:url(images/pause.png) no-repeat;
width:12px;
height:14px;
}
button#mutebtn{
background:url(images/speaker.png) no-repeat;
width:5px;
height:14px;
}
input#seekslider{
width:100px;
}
input#volumeslider{
width: 70px;
}
input[type='range'] {
-webkit-appearance: none !important;
margin:0px;
padding:0px;
background: #000;
height:13px;
border-bottom:#333 1px solid;
}
input[type='range']::-ms-fill-lower {
background:#000;
}
input[type='range']::-ms-fill-upper {
background:#000;
}
input[type='range']::-moz-range-track {
border:none;
background: #000;
}
input[type='range']::-webkit-slider-thumb {
-webkit-appearance: none !important;
background: radial-gradient(#FFF, #333);
height:11px;
width:11px;
border-radius:100%;
cursor:pointer;
}
input[type='range']::-moz-range-thumb {
background: radial-gradient(#FFF, #333);
height:11px;
width:11px;
border-radius:100%;
cursor:pointer;
}
input[type='range']::-ms-thumb {
-webkit-appearance: none !important;
background: radial-gradient(#FFF, #333);
height:11px;
width:11px;
border-radius:100%;
cursor:pointer;
}
</style>
<script>
var audio, playbtn, mutebtn, seekslider, volumeslider, seeking=false, seekto;
function initAudioPlayer(){
audio = new Audio();
audio.src = "audio/Stoker.mp3";
audio.loop = true;
audio.play();
// Set object references
playbtn = document.getElementById("playpausebtn");
mutebtn = document.getElementById("mutebtn");
seekslider = document.getElementById("seekslider");
volumeslider = document.getElementById("volumeslider");
// Add Event Handling
playbtn.addEventListener("click",playPause);
mutebtn.addEventListener("click", mute);
seekslider.addEventListener("mousedown", function(event){ seeking=true; seek(event); });
seekslider.addEventListener("mousemove", function(event){ seek(event); });
seekslider.addEventListener("mouseup",function(){ seeking=false; });
volumeslider.addEventListener("mousemove", setvolume);
// Functions
function playPause(){
if(audio.paused){
audio.play();
playbtn.style.background = "url(images/pause.png) no-repeat";
} else {
audio.pause();
playbtn.style.background = "url(images/play.png) no-repeat";
}
}
function mute(){
if(audio.muted){
audio.muted = false;
mutebtn.style.background = "url(images/speaker.png) no-repeat";
} else {
audio.muted = true;
mutebtn.style.background = "url(images/speaker_muted.png) no-repeat";
}
}
function seek(event){
if(seeking){
seekslider.value = event.clientX - seekslider.offsetLeft;
seekto = audio.duration * (seekslider.value / 100);
audio.currentTime = seekto;
}
}
function setvolume(){
audio.volume = volumeslider.value / 100;
}
}
window.addEventListener("load", initAudioPlayer);
</script>
</head>
<body>
<button id="playpausebtn"></button>
<input id="seekslider" type="range" min="0" max="100" value="0" step="1">
<button id="mutebtn"></button>
<input id="volumeslider" type="range" min="0" max="100" value="100" step="1">
</body>
</html>