Developer Sajeeb

Developer Sajeeb Hi there,
I'm Sajeeb a Frontend Web Developer & UiUX designer.

JS tip most devs still get wrong:value || 'default'β†’ also replaces 0, "" and false 😬value ?? 'default'β†’ replaces ONLY nu...
28/08/2026

JS tip most devs still get wrong:

value || 'default'
β†’ also replaces 0, "" and false 😬

value ?? 'default'
β†’ replaces ONLY null/undefined βœ…

If a "0" ever silently became your fallback, this is why.

Pair it with ?. and 5 lines become 1.

Stop asking AI "is my code good?"That question gets you a compliment. Not a code review.Here's the prompt I actually use...
27/08/2026

Stop asking AI "is my code good?"

That question gets you a compliment. Not a code review.

Here's the prompt I actually use β€” copy it:

━━━━━━━━━━━━━━━
"Act as a senior engineer doing a strict pull request review on the code below.

Review it in this exact order:
1. Bugs and logic errors β€” what breaks in production?
2. Security β€” injection, auth gaps, exposed keys, unvalidated input
3. Performance β€” unnecessary re-renders, N+1 queries, blocking calls
4. Readability β€” naming, structure, dead code
5. Edge cases I clearly didn't handle

For each issue: severity (Critical / High / Low), why it matters, and the corrected code.

Do not compliment the code. Do not rewrite everything. Be direct."
━━━━━━━━━━━━━━━

Why this works:
β†’ You gave it a ROLE (senior engineer, not helpful assistant)
β†’ You gave it an ORDER (so it doesn't stop at formatting)
β†’ You gave it an OUTPUT FORMAT (severity + fix)
β†’ You BLOCKED the flattery ("do not compliment")

That last line changes the output more than anything else.

Vague prompt β†’ vague answer. Structured prompt β†’ an actual senior reviewer.

I use variations of this daily in Cursor and Claude. Saves me hours a week.

More of what I build β†’ developersajeeb.com

Which AI tool are you coding with β€” Cursor, Copilot, or Claude? πŸ‘‡

I'm a developer. AI didn't replace me β€” it made me roughly 3x faster.The 6 tools that actually earned a spot in my daily...
02/08/2026

I'm a developer. AI didn't replace me β€” it made me roughly 3x faster.

The 6 tools that actually earned a spot in my daily workflow:

πŸ”Ή Claude β€” code review, refactoring, writing docs πŸ”Ή Cursor β€” pair programming inside the editor πŸ”Ή v0 / Lovart β€” first-draft UI and visuals πŸ”Ή n8n β€” connecting apps without writing glue code πŸ”Ή Figma AI β€” design system cleanup πŸ”Ή Perplexity β€” technical research with sources

Every one of these is free or under $20/month.

Which one are you not using yet? πŸ‘‡

"Should I use React or Next.js?" β€” I get asked this every week.Simple answer:React β†’ dashboards, internal tools, apps be...
01/08/2026

"Should I use React or Next.js?" β€” I get asked this every week.

Simple answer:

React β†’ dashboards, internal tools, apps behind a login. SEO doesn't matter. Next.js β†’ marketing sites, e-commerce, blogs, anything Google needs to find.

If people need to FIND you on search, Next.js. If they log in to use it, React is plenty.

Most agencies overcomplicate this. Don't.

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Chandpur
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