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Virtual DOM working principle and performance optimization I. Introducing the Concept The Virtual DOM is a lightweight, in-memory abstraction of the DOM tree maintained by React . Essentially, it’s a JavaScript object simulation of the real DOM, containing core information such as the DOM’s structure, attributes, and content. It acts as an “in-memory DOM proxy,” allowing React … Read more

I. Core Positioning: The “Golden Initialization Time” in the Component Lifecycle created The hook is invoked synchronously after a Vue component instance has been fully created. You can think of it as the crucial moment when the component’s “body” has been constructed but not yet “mounted” to the DOM . created It occurs after reactive data initialization and before the … Read more