isKindOfClass和isMemberOfClass的区别

<span style="font-size:18px;">isKindOfClass: Returns a Boolean value that indicates whether the receiver is an instance of given class or an instance of any class that inherits from that class.isMemberOfClass: Returns a Boolean value that indicates whether the receiver is an instance of a given class.isKindOfClass和isMemberOfClass之间的区别是：我们可以使用isKindOfClass来确定一个对象是否是一个类的实例，或者是该类祖先类的实例。isMemberOfClass只能用来判断前者，不能用来判断后者。</span>