Which approach?
You can play audio with <audio> tag or <object> or <embed>.
Lazy loading(load when you need it) the sound is the best approach if its size is small. You can create the audio element dynamically, when its loaded you can start it with .play() and pause it with .pause().
Things we used
We will use canplay event to detect our file is ready to be played.
There is no .stop() function for audio elements. We can only pause them. And when we want to start from the beginning of the audio file we change its .currentTime. We will use this line in our example audioElement.currentTime = 0;. To achieve .stop() function we first pause the file then reset its time.
We may want to know the length of the audio file and the current playing time. We already learnt .currentTimeabove, to learn its length we use .duration.
Example Guide
- When document is ready we created an audio element dynamically
- We set its source with the audio we want to play.
- We used 'ended' event to start file again.
When the currentTime is equal to its duration audio file will stop
playing. Whenever you use play(), it will start from the beginning.
- We used
timeupdate event to update current time whenever audio .currentTime changes.
- We used
canplay event to update information when file is ready to be played.
- We created buttons to play, pause, restart.
$(document).ready(function() {
var audioElement = document.createElement('audio');
audioElement.setAttribute('src', 'http://www.soundjay.com/misc/sounds/bell-ringing-01.mp3');
audioElement.addEventListener('ended', function() {
this.play();
}, false);
audioElement.addEventListener("canplay",function(){
$("#length").text("Duration:" + audioElement.duration + " seconds");
$("#source").text("Source:" + audioElement.src);
$("#status").text("Status: Ready to play").css("color","green");
});
audioElement.addEventListener("timeupdate",function(){
$("#currentTime").text("Current second:" + audioElement.currentTime);
});
$('#play').click(function() {
audioElement.play();
$("#status").text("Status: Playing");
});
$('#pause').click(function() {
audioElement.pause();
$("#status").text("Status: Paused");
});
$('#restart').click(function() {
audioElement.currentTime = 0;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<h2>Sound Information</h2>
<div id="length">Duration:</div>
<div id="source">Source:</div>
<div id="status" style="color:red;">Status: Loading</div>
<hr>
<h2>Control Buttons</h2>
<button id="play">Play</button>
<button id="pause">Pause</button>
<button id="restart">Restart</button>
<hr>
<h2>Playing Information</h2>
<div id="currentTime">0</div>
</body>
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