Learn useRef in 11 Minutes
Web Dev Simplified・2 minutes read
The video explains the benefits and proper use of the useRef hook in React, demonstrating its ability to persist values without causing re-renders. It warns against using useRef for state management or directly manipulating DOM elements, highlighting its usefulness in scenarios like storing previous state values.
Insights
- The useRef hook in React is highlighted as a valuable tool for persisting values between renders without causing re-renders, making it ideal for scenarios where state updates could lead to infinite loops.
- While useRef is beneficial for referencing HTML elements and storing previous state values, caution is advised against misusing it for state management or direct DOM manipulation to avoid potential code complexity and problems.
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Recent questions
What is the useRef hook in React?
A tool to persist values between renders.
How can useRef be used to reference HTML elements?
By setting a ref attribute to any ref.
What are the common pitfalls of misusing useRef?
Code complexity and potential issues.
How does useRef differ from state in React?
useRef persists values without re-renders.
What are some practical use cases for the useRef hook?
Storing previous state values and focusing on input elements.