用最简单的前端技术制作一个简洁的音乐播放器

<div class="wrapper">
<div class="background"></div>
<div class="content">
<audio src=""></audio>
<div class="music-massage">
<p class="musicname"></p>
<p class="musicer"></p>
</div>
<div class="music-icon">
<a class="m-icon m-fenxiang colored" href="http://service.weibo.com/share/share.php?title=#_loginLayer_1466697157538" target="new"></a>
<span class="m-icon m-star colored"></span>
<span class="m-icon m-heart colored"></span>
</div>
</div>
<span class="basebar">
<span class="progressbar"></span>
</span>
<div class="controls">
<div class="play-control">
<span class="m-icon m-play btn1" title="播放/暂停"></span>
<span class="m-icon m-change btn2" title="换频道"></span>
<span class="m-icon m-next btn3" title="换曲"></span>
</div>
<div class="music-control">
<span class="m-icon m-xunhuan colored"></span>
<span class="m-icon m-radom colored"></span>
</div>
</div>
</div>

//播放控制
var myAudio = $("audio")[0];
// 播放/暂停控制
$(".btn1").click(function(){
if (myAudio.paused) {
play()
} else {
pause()
}
});
// 频道切换
$(".btn2").click(function(){
getChannel();
});
// 播放下一曲音乐
$(".btn3").click(function(){
getmusic();
});
function play(){
myAudio.play();
$('.btn1').removeClass('m-play').addClass('m-pause');
}
function pause(){
myAudio.pause();
$('.btn1').removeClass('m-pause').addClass('m-play');
}

//获取随机频道信息
function getChannel(){
$.ajax({
url: 'http://api.jirengu.com/fm/getChannels.php',
dataType: 'json',
Method: 'get',
success: function(response){
var channels = response.channels;
var num = Math.floor(Math.random()*channels.length);
var channelname = channels[num].name;//获取随机频道的名称
var channelId = channels[num].channel_id;//获取随机频道ID
$('.record').text(channelname);
$('.record').attr('title',channelname);
$('.record').attr('data-id',channelId);//将频道ID计入data-id中
getmusic();
}
})
}
// 通过ajax获取歌曲
function getmusic(){
$.ajax({
url: 'http://api.jirengu.com/fm/getSong.php',
dataType: 'json',
Method: 'get',
data:{
'channel': $('.record').attr('data-id')
},
success: function (ret) {
var resource = ret.song[0],
url = resource.url,
bgPic = resource.picture,
sid = resource.sid,//获取歌词的参数
ssid = resource.ssid,//获取歌词的参数
title = resource.title,
author = resource.artist;
$('audio').attr('src',url);
$('.musicname').text(title);
$('.musicname').attr('title',title)
$('.musicer').text(author);
$('.musicer').attr('title',author)
$(".background").css({
'background':'url('+bgPic+')',
'background-repeat': 'no-repeat',
'background-position': 'center',
'background-size': 'cover',
});
play();//播放
}
})
};

setInterval(present,500)    //每0.5秒计算进度条长度
$(".basebar").mousedown(function(ev){  //拖拽进度条控制进度
var posX = ev.clientX;
var targetLeft = $(this).offset().left;
var percentage = (posX - targetLeft)/400100;
myAudio.currentTime = myAudio.duration * percentage/100;
});
function present(){
var length = myAudio.currentTime/myAudio.duration100;
$('.progressbar').width(length+'%');//设置进度条长度
//自动下一曲
if(myAudio.currentTime == myAudio.duration){
getmusic()
}
}