Fmpq教程在线工具 - Fmpq教程实例

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Fmpq教程(fmpq.com)</title>	
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>

<script>
$(function () { 
	function fn1( value ) {
	  alert( value );
	  return false;
	}
	 
	function fn2( value ) {
	  fn1( "fn2 says: " + value );
	  return false;
	}
	var topics = {};
	jQuery.Topic = function( id ) {
		var callbacks,
			method,
			topic = id && topics[ id ];
	 
		if ( !topic ) {
			callbacks = jQuery.Callbacks();
			topic = {
				publish: callbacks.fire,
				subscribe: callbacks.add,
				unsubscribe: callbacks.remove
			};
			if ( id ) {
				topics[ id ] = topic;
			}
		}
		return topic;
	};
	// 订阅者
	$.Topic( "mailArrived" ).subscribe( fn1 );
	$.Topic( "mailArrived" ).subscribe( fn2 );
	$.Topic( "mailSent" ).subscribe( fn1 );	 
	// 发布者
	$.Topic( "mailArrived" ).publish( "hello world!" );
	$.Topic( "mailSent" ).publish( "woo! mail!" );	 	/*输出:
	hello world!
	fn2 says: hello world!
	woo! mail!*/
})
</script>
 
</body>
</html>