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第95题(2019-12-03)：谈谈你对Virtual DOM 的内部工作原理的理解？ #97

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qappleh opened this issue Dec 3, 2019 · 1 comment

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qappleh commented Dec 3, 2019

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ustchcl commented Jun 21, 2020 •

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框架所维护的Virtual DOM: 是一个虚拟DOM节点的树.
开发者所声明的UI, 被表达成这棵树.
框架根据这棵树, 渲染出真实DOM.
在UI变更时, 对树做diff, 判断其变化的部分, 然后将变化的部分刷新.

在flutter中, 甚至有三棵树, 一个是UI节点, 一个是状态, 一个是中间表述

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