[【01】jQuery如何实现事件委托？](%E3%80%9001%E3%80%91jQuery%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E4%BA%8B%E4%BB%B6%E5%A7%94%E6%89%98%EF%BC%9F.md)