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Next.js Ref

Next.js Ref Notes

2025-01-08

File Stru

app/
    api/
        route.tsx
        db.tsx
    favicon.ico
    error.tsx
    global.css
    page.tsx           # Route: /
    layout.tsx
    docs/ # component
        error.tsx # docs errors
        layout.tsx # docs layout
        nav.tsx # docs nav
        page.tsx       # Route: /docs
        section1/
            page.tsx   # Route: /docs/section1

Page

  • route UI

Layout

  • Shared UI for folder and children
  • Preserves state, remains interactive, does not rerender
  • By default, layouts are nested. Eg, docs with custom sidebar and nav
  • Only root layout can have <html> and <body> elements.
  • Layouts are Svr Components by default
  • Can fetch data
  • No passing data btw parent and child layout
  • Don't have access to pathname.
  • Don't have access to route segments below itself

Data Fetching

Fetching Customizations

Next.js LIfecycle

Next.js app stages

State Mgmt

Next.js App State Management

 

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