What is the purpose of the shouldComponentUpdate lifecycle method and how does it relate to React.PureComponent?

React Developer Hard

React Developer — Hard

What is the purpose of the shouldComponentUpdate lifecycle method and how does it relate to React.PureComponent?

Key points

  • shouldComponentUpdate provides manual control over re-rendering
  • React.PureComponent automates re-rendering optimization
  • Shallow comparison of props and state in PureComponent
  • Manual boolean return in shouldComponentUpdate
  • Both focus on optimizing component rendering

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