Which of the following can you use to identify and prevent unnecessary renders in a class component?

  • shouldComponentUpdate method.
  • useContext hook.
  • useEffect hook.
  • useState hook.
You can use the shouldComponentUpdate method in a class component to identify and prevent unnecessary renders. This method allows you to specify conditions under which the component should or shouldn't update. It's a key optimization technique for class components. The useEffect, useState, and useContext hooks are used in functional components and serve different purposes.
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