Glossary term
What is reconciliation? Meaning for developers
In Senior Frontend Depth
How React compares the new tree of elements with the old one, using type and key. It decides what to update, keep or remount.
Learn it properly · Senior Frontend DepthLesson 0: React Rendering Model: Render, Commit, Reconciliation and KeysWhat “render” really means, how React finds what changed between renders, why keys matter and how batching works.In React in Depth
How React compares the new tree of elements with the old one to decide what to change in the DOM.
Learn it properly · React in DepthLesson 1: State and Rendering: What Really Happens When State ChangesState, re-renders, batching, how React compares trees, keys, and the render-then-commit steps, with a traced example.