<html> <head> <script type="text/javascript"> var add =function(num1,num2,num3){ alert(num1+num2+num3); } alert(add.length); </script> </head> <body> </body> </html>
javascript之工厂方式定义对象
原文：http://www.cnblogs.com/qq-757617012/p/4185353.html
