在javascript中检测按键的最简单方法

I have an idea for a game in javascript (I'm going to make it with EaselJS) and I'll have to detect keypresses. After looking around on the internet I've seen a lot of suggestions (use window.onkeypress, use jQuery, etc.) but for almost every option there's a counterargument. What do you guys suggest? Using jQuery for this sounds easy enough but I have virtually no experience with that library (and I'm not particulary a veteran at javascript either) so I'd rather avoid it. If jQuery is the best option, can someone give a good example (with explanation would be awesome) of how to do this?I have an idea for a game in javascript (I'm go