问如何在jquery中播放随机音频时运行函数？

EN

var audioFiles = [
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/01.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/02.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/03.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/04.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/05.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/06.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/07.m4a',
	'https://cdn.rawgit.com/aplustardcrocodile/aplustardcrocodile.github.io/master/assets/sounds/08.m4a',
];

var face = $('#face'),
	audio = $('#audio')[0],
	isPlaying = false;

face.on('click', function(){
	
	if( !isPlaying ){
		isPlaying = true;

		// toggle class to change image
		$(this).toggleClass('active');

		// get random from audioFiles
		var currentAudio = audioFiles[Math.floor(Math.random() * audioFiles.length)];

		// set new random audio as src
		audio.src = currentAudio;

		// ..then play it
		audio.currentTime = 0; // 0 always make sure its reset
		audio.play();
	}
})

// check when audio is complete
audio.onended = function(){

	// reset isPlaying
	isPlaying = false;
	
	// remove active-class from face
	face.removeClass('active');

};

body { padding: 1%; background: aliceblue; width: 472px; margin: 0 auto; position: relative; }
#face {
	background: url('https://aplustardcrocodile.github.io/assets/images/Face.png') no-repeat;
	width: 472px; height: 665px;
	cursor: pointer;
	transition: transform .5s ease;
}

#face:hover { opacity: .9; }


#face.active {
	opacity:1;
	background: url('https://aplustardcrocodile.github.io/assets/images/Face-loop.gif') no-repeat;
	transform: rotateZ(5deg);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

<!-- face container -->
<div id="face"></div>

<!-- audio element -->
<audio id="audio"></audio>