insertUI vs renderUI

Feature renderUI insertUI
Mechanism Re-renders the entire UI component and replaces it. Inserts new UI elements without modifying existing ones.
Performance Slower (reprocesses all HTML/dependencies every time). Faster (only processes new content).
DOM Updates Forces full reflow (replaces container content). Uses insertAdjacentHTML (minimal reflow).
Dependencies Re-resolves dependencies (CSS/JS) on every render. Processes dependencies once for new content.
Use Case When the entire UI component must be rebuilt. For incremental updates (adding/removing elements).
State Preservation May reset inputs/outputs (re-initializes everything). Preserves existing states (only binds new elements).