HcySunYang/vue-design

This project is a Virtual DOM renderer, an engine that transforms virtual node trees into real DOM elements and updates them efficiently when the tree changes. Its core identity is focused on the rendering and reconciliation of virtual nodes, providing the foundational mechanism for building user interfaces.

The renderer implements a patch-based DOM update system that applies targeted operations based on computed differences between virtual node trees. It supports fragment rendering for components with multiple root children, uses keyed child reconciliation to reuse and reorder elements during list updates, and employs lazy attribute diffing to only update changed properties on real DOM nodes. A hooks-based lifecycle system invokes user-defined callbacks at mount, update, and unmount phases, while event delegation via props attaches listeners through virtual node props with automatic cleanup.

The project covers the full scope of virtual DOM rendering, from initial tree creation to efficient incremental updates. Its documentation and implementation surface provide a complete reference for how a virtual DOM renderer operates internally.