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Frameworks & web · #solidjs
Defining createSignal inside a SolidJS component resets state on every render. Declare signals at module level instead.
Use SolidJS createResource to tie fetch requests to reactive signals, with automatic loading states and abortion of stale requests.
Use createMemo to cache derived values in SolidJS so they recompute only when tracked dependencies change.
Avoid redundant recalculations in SolidJS by memoizing expensive derived signals with createMemo.
SolidJS components run once. Learn how createMemo tracks signal dependencies so derived lists update automatically instead of staying stuck on the first render.
Own SolidJS UI state with createSignal, createMemo, and createEffect while avoiding stale DOM and broken reactivity.
Learn when to use Signals, Stores, and Context in SolidJS to maintain fine-grained reactivity and avoid common pitfalls like reactivity loss through destructuring.
SolidJS’s Signals let you update the DOM surgically—no virtual‑DOM diffing, no component re‑renders. Learn how signals, memos, and control flow primitives work, see a worked example, and weigh the trade‑offs for real‑world projects.
SolidJS’s createSignal and createEffect let you build components that re‑render only when needed, cutting overhead compared to virtual‑DOM frameworks. A concise example and trade‑off guide help you decide if fine‑grained reactivity fits your project.