Tencent Cloud Developer
Sep 15, 2021 · Frontend Development
Deep Dive into Vue.js Virtual DOM Diff Algorithm and Source Code Analysis
The article thoroughly explains Vue.js’s virtual‑DOM diff algorithm, detailing its depth‑first traversal, same‑level node comparison, the sameVnode key/selector check, index map creation, O(n) head‑tail and index‑based matching loops, Vue 3 static‑type optimizations, and a practical implementation for array change detection.
Diff AlgorithmVue.jsalgorithm optimization
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