<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			/*-------代理模式，A想执行C方法，A调用B间接执行*/
			function peopleSing() {
				this.singSong = function() {
					var songName = new peopleManageSongs().getSongName();
					alert("老子拿到歌了，你妈~~" + songName);
				};
			};

			function peopleManageSongs() {}
			peopleManageSongs.prototype.getSongName = function() {
				var name = new SongsCreator().getSongName('001');
				return name;
			}

			function SongsCreator() {
				this.getSongName = function(number) {
					switch (number) {
						case '001':
							return "独家记忆";
						case '002':
							return "空白格";
						case "003":
							return "蓝蓝的天上白云飘";
						default:
							return "我的心好累";
					}
				}
				this.getVipSongsName = function() {
					return "这是VIP的歌";
				}
			}
			var  p = new peopleSing().singSong();
		</script>
	</head>

	<body>
	</body>

</html>