Performance implementing Large Arrays in React State Updates Using useState Hook
I'm trying to figure out I'm dealing with I'm not sure how to approach I'm maintaining legacy code that I'm refactoring my project and I'm stuck on something that should probably be simple. Hey everyone, I'm running into an issue that's driving me crazy. After trying multiple solutions online, I still can't figure this out. I'm experiencing important performance optimization when updating a large array in React using the `useState` hook. My array can contain over 10,000 objects, each with multiple properties, and I'm trying to update a single property across all objects based on user input. The update function seems to cause noticeable lag, especially on lower-end devices. I've tried using both the spread operator and `Array.map()` to create the new array, but it doesn't seem to improve performance. Here’s what I’ve tried: Using the spread operator: ```javascript const handleUpdate = (newValue) => { setData(prevData => [...prevData.map(item => ({ ...item, propertyToUpdate: newValue }))]); }; ``` This approach results in a laggy UI when the user types in the input field. Then I tried using `Array.map()` directly without spreading: ```javascript const handleUpdate = (newValue) => { setData(prevData => prevData.map(item => ({ ...item, propertyToUpdate: newValue }))); }; ``` This still didn't solve the scenario. I also checked the React DevTools, and I noticed that the component re-renders excessively when the state changes. Is there a more efficient way to handle large array updates in the state, or should I consider using a different approach such as `useReducer`? Any suggestions on best practices for performance improvements would be greatly appreciated. I'm working on a web app that needs to handle this. How would you solve this? What's the best practice here? How would you solve this? For context: I'm using Javascript on Windows 10. What would be the recommended way to handle this? This is my first time working with Javascript LTS. Any ideas what could be causing this? Could someone point me to the right documentation? This is for a service running on macOS. What are your experiences with this?