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NaN !== NaN; Developer T-Shirt (JavaScript Edition — Dark Mode)

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£25.00
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NaN !== NaN; Developer T-Shirt (JavaScript Edition — Dark Mode)

£25.00
Size

A clean, clever nod to one of JavaScript's most iconic quirks. This Dark Mode tee features the paradox we've all debugged at least once:

NaN !== NaN;

It's subtle enough for everyday wear, but instantly recognisable to anyone who's wrestled with type coercion, floating-point shenanigans, or mysterious “why isn't this equal?” moments.

Soft, durable, and perfect for deep-focus coding, remote work sessions, or quietly laughing at the language you love (and occasionally fear).

  • 100% combed and ring-spun cotton (Heather colors contain polyester)
  • Fabric weight: 4.2 oz./yd.² (142 g/m²)
  • Pre-shrunk fabric
  • Side-seamed construction
  • Shoulder-to-shoulder taping
  • Blank product sourced from Nicaragua, Mexico, Honduras, or the US

Disclaimer: The fabric is slightly sheer and may appear subtly see-through under certain lighting conditions.

Printed on demand — predictable comfort, unpredictable comparisons.

Part of the JavaScript collection, within Web & Frontend.

Available in Dark Mode and Light Mode.

Review our T-Shirt size guide

Heads-up

Shipping costs vary by region, so it’s worth giving the delivery total at checkout a quick look before confirming your order. Some variants may show limited availability in certain locations—if fulfilment isn’t available in your region, our suppliers will try to ship globally from the nearest facility that can produce that specific item. When this happens, delivery costs may be higher than expected due to the increased distance.

We’re constantly reviewing suppliers and expanding fulfilment options, and new routes may open over time.

If you’d like updates when things change, you can join our mailing list at the bottom of the page.

EU Product Safety (GPSR) Compliance

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