Dan_blog_为什么要写super(props)

四个问题

• Why do we call super?

试想，如果在 super 之前调用了一个函数，函数中使用了this.name，但此时this.name还没有定义

• Can we not call it?

• If we have to call it, what happens if we don't pass props?

• Are there any other arguments?