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Messy frontend code can lead to inefficiencies and difficult debugging. Avoid common pitfalls such as using too many global variables, poor naming conventions, and creating 'god' functions that do too much. Clean your code by organizing your folder structure, using linters, and not hardcoding configurations. Utilizing small, reusable functions and libraries can make your code more manageable and maintainable.

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Junior Frontend Devs

Don’t do this (unless you want sh*t frontend code)

<h3>🧼 17 Frontend Mistakes to Avoid for Clean Code:</h3>
<ol>
<li>
Too many global variables
→ Leads to unexpected bugs and harder testing. Use scoped/function variables instead.
</li>
<li>
Poor naming
→ Avoid vague names like <code>x</code> or <code>data</code>. Use descriptive names, especially for wider scopes.
</li>
<li>
“God” functions
→ Break large, do-it-all functions into smaller, focused ones for readability and reusability.
</li>
<li>
Functions with similar-type params
→ Pass an object instead of multiple booleans/strings to avoid confusion.
</li>
<li>
Not cleaning up resources
→ Always remove listeners/intervals in React (<code>useEffect</code> cleanup) to prevent memory leaks.
</li>
<li>
Unit-less variables
→ Add units to variable names (<code>timeoutMs</code>, <code>sizePx</code>) for clarity.
</li>
<li>
Deeply nested conditionals
→ Flatten logic using early returns and smaller functions.
</li>
<li>
Hardcoded config
→ Store URLs, keys, etc., in environment variables or constants.
</li>
<li>
Dead code left in comments
→ Use version control instead. Just delete it.
</li>
<li>
Giant utils files
→ Split utility functions by feature and colocate where used.
</li>
<li>
Swallowed errors
→ Always log or handle errors properly to aid debugging and user feedback.
</li>
<li>
One massive file
→ Break up large files by responsibility into logical folders.
</li>
<li>
No linter
→ Use ESLint (especially with React plugins) to catch bugs and enforce consistency.
</li>
<li>
Messy folder structure
→ Organize by feature or domain. Avoid random file dumps.
</li>
<li>
Obvious comments
→ Don’t comment basic code. Use better naming to express intent.
</li>
<li>
Missing comments on weird logic
→ Always explain hacks or workarounds with context.
</li>
<li>
Rewriting existing solutions
→ Prefer reliable libraries (like <code>lodash</code>) over writing custom implementations.
</li>
</ol>
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Very insightful!