[Number类型](Number%E7%B1%BB%E5%9E%8B.md) [位操作符](%E4%BD%8D%E6%93%8D%E4%BD%9C%E7%AC%A6.md) [String类型](String%E7%B1%BB%E5%9E%8B.md) [Object类型](js/chapter1.md)