Today I Split My First Huge Component from the Course Into Clean, Reusable Components

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  • MyrinNew
    Senior Member
    • Feb 2024
    • 5168

    #1

    Today I Split My First Huge Component from the Course Into Clean, Reusable Components

    Today I worked on one of the most important exercises in my React course:

    splitting a huge component into multiple smaller, meaningful components.


    The course gave me one large file with all the UI and logic inside a single component.

    My task was simple but very important:


    Take the giant component and break it into a clean component structure.


    And today, I finally completed it.





    The Starting Point: One Giant File From the Course πŸ˜…

    Inside the course, they gave me a full working example:
    • Navbar
    • Search
    • Movie List
    • Watched Movies
    • Summary
    • Toggling sections
    • Movie cards
    • Watched movie cards
    • Average ratings
    • All useState logic


    Everything was inside one massive component.


    This wasn’t a mistake β€” this was intentional.

    The goal was to force me to practice splitting.


    And honestly, it was the perfect challenge.





    My Task: Split the Huge Component Into Logical Parts 🧩

    Instead of splitting randomly, I followed a clear rule:


    Each component should represent a meaningful part of the UI.


    Here’s how I broke it down:


    βœ” NavBar Section

    • Logo
    • Search
    • NumResults


    All of these are related to navigation, so they stay together.


    βœ” Main Section

    Holds the two major panels:
    • ListBox (the movies list)
    • WatchedBox (the watched movies section)


    βœ” Movie Listing Components

    Inside ListBox, I split:
    • MovieList
    • Movie


    βœ” Watched Section Components

    Inside WatchedBox, I split:
    • WatchedMoviesSummary
    • WatchedMovieList
    • WatchedMovie


    By splitting this way, the structure became crystal clear.





    The Final Component Structure I Created





    App
    β”œβ”€ NavBar
    β”‚ β”œβ”€ Logo
    β”‚ β”œβ”€ Search
    β”‚ └─ NumResults
    β”œβ”€ Main
    β”‚ β”œβ”€ ListBox
    β”‚ β”‚ β”œβ”€ MovieList
    β”‚ β”‚ └─ Movie
    β”‚ └─ WatchedBox
    β”‚ β”œβ”€ WatchedMoviesSummary
    β”‚ β”œβ”€ WatchedMovieList
    β”‚ └─ WatchedMovie







    This is clean, readable, and exactly what the course wanted me to practice.





    What I Learned Today

    ⭐ 1. Huge Components Are a Starting Point

    The course intentionally gave me a huge component so I could learn how to break it down myself.


    ⭐ 2. Splitting Should Be Logical, Not Random

    A component must represent a real β€œpiece” of the UI.


    ⭐ 3. Medium Components Make Everything Easier

    Clear, understandable blocks β†’ better developer experience.


    ⭐ 4. After Splitting, State Becomes Easier

    Each piece controls its own logic instead of everything mixing together.





    Final Thoughts πŸ’­

    Today was not just a coding exercise β€” it was a mindset shift.


    I learned:
    • how to take a large messy component
    • understand its structure
    • identify natural boundaries
    • and break it into clean, reusable parts


    This exercise improved my React thinking more than anything else.


    Tomorrow, I’ll continue the next part of my course and apply the same principles to new features.





    πŸ”š Note


    If you want to know which framework and approach I used to split this huge component, then definitely read this blog of mine.




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