🚀 Day 2 of Learning React: Reconciliation, Diffing Algorithm, Render Phase, Commit Phase & React Fiber

Short summary

React uses reconciliation to detect changes between Virtual DOM trees via a fast diffing algorithm that runs in O(n) time by assuming different element types are rebuilt entirely while same-type elements only update changed properties. The Render Phase plans changes without touching the Real DOM; the Commit Phase applies them. This two-phase approach enables performant real-time UI updates.

• •Reconciliation: React's process for figuring out what changed between two Virtual DOM renders
• •Diffing algorithm: Compares trees in O(n) using two assumptions—different types rebuild, same types patch
• •Two phases: Render Phase plans; Commit Phase actually updates the Real DOM

Generated with AI, which can make mistakes.