Benefits of Virtual DOM
summary
Argues that Virtual DOM yields practical top-end performance despite recreating trees, shows a homegrown MaquetteJS (~1,000 lines) used to render ~800 nodes in ~2ms with diffing ~1ms and input work taking ~9ms, and reports sustained 60fps; demonstrates unit testing of UI using Node.js with a virtual DOM projector — 1,700 tests in 2.3s — achieving 100% code coverage on visual components and a small test query utility that probes rendered virtual nodes.
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