Unverified50% confidenceFactExact time
React maintains a lightweight copy of the DOM in memory (Virtual DOM) and uses a diff algorithm to calculate the minimal set of changes before batch-updating the real DOM
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026
Sources
Full-Stack Development in a Todo App: 35 Core Technologies Every Programmer Should Know
bilibili程序员-智能译站6/4/2026
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UnverifiedReact等前端框架通过虚拟DOM（Virtual DOM）和diff算法计算最小变更集，批量更新真实DOM，减少浏览器的重排和重绘操作80% similarUnverifiedReact、Vue 等框架在运行时维护虚拟 DOM，通过对新旧虚拟树进行 diff 运算再将差异批量更新到真实 DOM76% similarUnverified虚拟 DOM 是对真实 DOM 的轻量级 JavaScript 对象表示，框架通过 Diff 算法比较新旧虚拟 DOM 树差异后批量更新真实 DOM68% similarUnverifiedReact的Virtual DOM diff算法通过Reconciliation（React 16+使用Fiber架构）将时间复杂度从理论上的O(n³)优化到O(n)66% similarUnverifiedReact流式渲染性能优化方案包括使用useDeferredValue降低非紧急更新优先级、通过React.memo隔离稳定节点重渲染、采用追加而非替换的DOM操作策略63% similar
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