Undefined Is Not Null: There Is a Difference – JavaScript Developer Humor Lightweight Sweatshirt
Designed and sold by CalmWorldShop
$24.74
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Lightweight SweatshirtEveryday sweatshirt, french terry, raglan sleeve
$24.74
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- Slim fit, so size up if you prefer a regular fit, or go two sizes up for a baggy fit
- Raglan sleeve for a great vintage-inspired slim fit
- Heathered and marled fabric ringspun for softness
- Midweight 7.5 oz (250gsm) French terry
- Solid colors are 80% ring-spun cotton, 20% polyester. Heather colors are 60% ring-spun cotton, 40% polyester
- 1 x 1 rib cuffs and crewneck band with spandex, to maintain shape
- Washing instructions: Hand or machine wash cold. Do not dry clean, bleach, tumble dry or iron on the print
- The third party printer of this product is evaluated according to International Labor Organization standards
- The printer of this product sources blanks from manufacturers committed to improving cotton farming practices with the Better Cotton Initiative
- Since every item is made just for you by your local third-party fulfiller, there may be slight variances in the product received
Undefined Is Not Null: There Is a Difference – JavaScript Developer Humor
undefined !== null // there is a difference. Every JavaScript developer has been bitten by this one: two values that look like “nothing” but aren’t the same thing, and a strict equality operator that knows it. This design shows the comparison as a block of code in terminal green and red, with the punchline written as a code comment.
Made for web developers, frontend engineers and anyone who has ever debugged a “cannot read properties of undefined” error at 2 a.m. A good fit for code review survivors, team chats and coworker gift swaps.
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