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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>runoops自学教程(runoops.com)</title> <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script> </head> <body> <script> $(function () { function fn1( value ) { alert( value ); } var callbacks = $.Callbacks(), add = callbacks.add, remove = callbacks.remove, fire = callbacks.fire; add( fn1 ); fire( "hello world" ); remove( fn1 ); /*输出:hello world*/ }) </script> </body> </html>
运行结果：