HTML5音乐播放功能增强：支持音乐列表播放，试听

function playmusic(i){
var my = document.getElementById("player");

switch(i)
{
//每添加一个歌，则增加一个case，数字和html里设置的匹配
case 1:
my.setAttribute("src","http://mp3.*woo**eu.com/mp3.php/15314202/mp3wooeu.mp3"); //2.添加歌曲url
document.getElementById("mp3name").innerText = "正在获取歌曲。。。";
my.addEventListener("canplaythrough",
function() {
document.getElementById("mp3name").innerText = "群星 - 爸爸去哪儿"; //3.添加歌名
},false);
my.play();
break;
case 2:
my.setAttribute("src","http://mp3.*wo**oeu.com/mp3.php/15257322/mp3wooeu.mp3");
document.getElementById("mp3name").innerText = "正在获取歌曲。。。";
my.addEventListener("canplaythrough",
function() {
document.getElementById("mp3name").innerText = "Beyond - 海阔天空";
},false);
my.play();
break;
case 3:
my.setAttribute("src","http://fdfs.xmc*d**n.com/group3/M00/3F/64/wKgDslJJhJiDr4JAACG0hCSFjS8536.mp3");
document.getElementById("mp3name").innerText = "正在获取歌曲。。。";
my.addEventListener("canplaythrough",
function() {
document.getElementById("mp3name").innerText = "苏打绿 - 再遇见";
},false);
my.play();
break;
default:
}
}