What is Automatic Batching in React 18?
React 18 fundamentally changes how React handles state updates by introducing automatic batching. The key difference is that batching now extends beyond just event handlers. In most cases, regardless of where a state update originates, React will attempt to batch it together with other pending updates.
Let’s revisit our previous timeout example:
setTimeout(() => {
setCount(count + 1); // Update 1
setIsVisible(false); // Update 2
}, 1000);
In React 18, these updates within the timeout will generally be batched together, ensuring that the component re-renders only once after both states have been modified.
What is Automatic Batching in React 18
React 18 includes great features including automatic batching, which enhances rendering effectiveness and results in significant gains for programmers and users.
This article is going to explain what batching is, how it worked before in React, and how our lives have been changed by automatic batching.
Table of Content
- What is Batching?
- Batching in React Before React 18
- What is Automatic Batching in React 18?
- Benefits of Automatic Batching
- Automatic Batching in Action
- When Automatic Batching Might Not Apply
- Advanced Use Cases and Best Practices
- Conclusion