Advanced Topics
Code splitting, lazy loading, multi-threading, worklets, custom native views
1What is the main advantage of code splitting in a React Native application?
What is the main advantage of code splitting in a React Native application?
回答
Code splitting reduces the initial bundle size by loading only the code needed at startup. Other modules are loaded on demand, which significantly improves application launch time. This is particularly beneficial for large applications with many features.
2How to implement lazy loading of a component with React.lazy in React Native?
How to implement lazy loading of a component with React.lazy in React Native?
回答
React.lazy allows dynamically loading a component by wrapping it with a function that returns a dynamic import. The component must then be wrapped in a Suspense with a fallback to handle the loading state. This approach defers loading heavy components until they are actually needed.
3What is a worklet in the context of React Native Reanimated?
What is a worklet in the context of React Native Reanimated?
回答
A worklet is a JavaScript function executed on the native UI thread rather than the main JavaScript thread. This enables smooth 60fps animations because animation calculations are not blocked by other JavaScript operations. Worklets are identified by the 'worklet' directive at the beginning of the function.
In React Native, on which main threads does the application run?
What is the difference between useSharedValue and useState for animations with Reanimated?
+19 面接問題