2025.09.08U·09I Didn't Know My Code Was Running on Server (ReferenceError: window is not defined)
My React code crashed with 'window is not defined' in Next.js. Here's why Server Side Rendering (SSR) breaks browser APIs and 3 robust ways to fix it (useEffect, typeof check, Dynamic Import).
Next.jsSSRReact
→2025.06.22F·146Hydration: Bringing HTML to Life
Turning static HTML from Server (Dry) into Interactive App (Wet). The core concept of Next.js.
CSWebFrontend
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