What is the difference between setState and replaceState methods?

  • There is no difference, they both update component state
  • replaceState is deprecated in React v16, while setState is still supported
  • setState is used in class components, while replaceState is used in functional components
  • setState merges the new state with the old state, while replaceState overwrites the old state
In React, the "setState" method is used to update component state, and it merges the new state with the old state. The "replaceState" method is similar, but it overwrites the old state completely with the new state. However, "replaceState" is deprecated in React and should not be used. Instead, you should use the "setState" method to update state in a React component.
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