Câu hỏi phỏng vấn Angular
Câu hỏi

What is Angular Ivy?

Câu trả lời

Angular Ivy is the code name for Angular's next-generation compilation and rendering pipeline. It was introduced as the default compiler and runtime with the release of Angular version 9, replacing the previous View Engine. Ivy represents a significant overhaul of Angular's internal processes, aiming to improve performance, reduce bundle sizes, and enhance the development experience.

The key features and improvements brought by Angular Ivy include:

  • Incremental DOM: Unlike the previous Virtual DOM approach, Ivy uses Incremental DOM, which compiles components into a series of instructions that update the template in place. This method reduces memory allocation and garbage collection overhead, leading to better performance[1].

  • Tree Shaking: Ivy's compilation process transforms templates into instructions, allowing Angular to know at compile time which instructions are not used. This enables more effective tree shaking, which is the removal of unused code from the final bundle, resulting in smaller application sizes[1].

  • Locality: Ivy adheres to the principle of locality, meaning that each component compiles using only its own information. This allows for faster recompilation when changes are made to a component, as only the changed components need to be recompiled, not their parents or other related components[1][2].

  • Improved Debugging: With Ivy, developers can expect better debugging experiences due to the more readable and straightforward generated code[1].

  • Enhanced Build Times: Ivy improves build and rebuild times, especially with the i...

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