Vue.js 中的“子类”是什么意思？

Question

I'm reading the documentation on Vue.extend :

Create a “subclass” of the base Vue constructor. The argument should be an object containing component options.

What does 'subclass' mean in Vue.js?

Answer 1

In Object-Oriented Programming in general, "subclass" is the term for a class that inherits functionality from another class.

Although Vue components aren't defined explicitly as classes, the result of Vue.extend is a constructor for a Vue component that has inherited the properties from the base Vue constructor. This constructor is what they are referring to as the "subclass" in this case.