***实践肯定是第二种选择. jQuery有关于插件创作的出色文章，其中还包含许多其他***实践.还有一个开始的模板"，使您的第二个选择更进一步.

Best practice is definitely the second option. jQuery has a great article on plugin authoring with a number of additional best practices. There's also a starting "template" that takes your second option a bit further.