Faster rendering performance : Vue 3.0 adopts a new responsive system based on Proxy, which greatly improves the compilation and rendering speed of templates. In addition, Vue 3.0 also optimizes the virtual DOM algorithm and update strategy, further improving rendering performance.
Smaller size and better Tree-shaking support : Vue 3.0's core library is much smaller than Vue 2.0, and can better support Tree-shaking, only importing the modules used, without including useless code .
Better TypeScript support : Vue 3.0 uses TypeScript to rewrite the entire code base, and provides better TypeScript support and type declarations. This allows developers to get better code hints and type checking when writing Vue applications.
Better Composition API : Vue 3.0 introduces Composition API, which makes component code clearer and easier to maintain by using functional APIs to organize and manage component logic. The Composition API also supports better code reuse and composition, improving code reusability and testability.
Better support for custom directives and rendering functions : Vue 3.0 supports more flexible and efficient custom directives and rendering functions, making it easier for developers to implement custom rendering logic and component behavior.