How is vue3 better than vue2?

The key advantages of Vue 3 over Vue 2 include: Performance improvement: Responsive system rewriting, optimizing update speed Virtual DOM optimization, improving rendering efficiency Code organization and maintainability: Combined API, improving maintainability Teleport and Suspense to improve code flexibility and readability. Developer experience: better debugging tools, simplifying the debugging process. TypeScript 2.7 support, enhanced code prompts and type checking

Comparison of the advantages of Vue 3 and Vue 2

Core performance improvement

• Responsive system rewriting : Vue 3 introduces Reactivity API, optimizes the performance of responsive systems and improves update speed.
• Virtual DOM optimization: Adopts a new virtual DOM algorithm, reducing diff operations and improving rendering efficiency.

Better code organization and maintainability

• Composition API: Composition API provides better Code organization allows functions to be decomposed into smaller reusable units to improve maintainability.
• Teleport and Suspense: Teleport allows moving components in the DOM without re-rendering the parent component, and Suspense allows placeholders to be displayed while asynchronous data is loading. These features improve code flexibility and readability.

Better developer experience

• Better debugging tools:Vue 3 provides more comprehensive debugging Tools, including new features in Vue Devtools, simplify the process of debugging applications.
• TypeScript 2.7 support: Vue 3 officially supports TypeScript 2.7 and higher, with enhanced code hints and type checking.

Other improvements

• Custom renderer: Vue 3 allows the use of custom renderers, providing greater rendering flexibility.
• Improved internationalization: Vue 3 provides improved internationalization support, making it easier to localize applications.
• Smaller bundle size: The Vue 3 team optimized the code base to make the bundle size smaller than Vue 2.

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