1.

What is the difference between Element and Component?

Answer»
React ComponentReact Element
It is a simple function or class USED for accepting input and returning a React elementIt is a simple object used for DESCRIBING a DOM node and the ATTRIBUTES or properties as per your choice.
The React Component has to keep the references to its DOM nodes and also to the instances of the child components.The React Element is an immutable description object, and in this, you cannot apply any methods.
11. What are refs used for in React?

Refs are a function in React having the following uses:

  • Accessing DOM and React elements that you have created.
  • Changing the VALUE of a child component without using props and others.


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