A junior developer is facing issues where a component is re-rendering excessively, causing performance issues. Which lifecycle method in class components can help prevent unnecessary re-renders?
- componentDidUpdate
- componentWillUnmount
- render
- shouldComponentUpdate
The shouldComponentUpdate lifecycle method in class components allows you to control whether a component should re-render or not. By implementing this method, you can optimize performance by preventing unnecessary re-renders. componentDidUpdate, componentWillUnmount, and render are used for different purposes and don't directly address the issue of excessive re-renders.
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