<html> <head> <script src="taffy.js"></script> <script> var city = TAFFY(); city.insert({name:"D",state:"D1"}); city.insert({name:"A",state:"D3"}); city.insert({name:"D",state:"D2"}); city.insert({name:"A",state:"D4"}); alert(city({name:"A"}).count()); </script> </head> <body> </body> </html>