Undefined Is Not Null: There Is a Difference – JavaScript Developer Humor Zipped Hoodie
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$35.19
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Zipped HoodieFull-zip hoodie, cozy fleece, front pouch
$35.19
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- Heavyweight 8.25 oz. (~280 gsm) cotton-rich fleece
- Solid colors are 80% cotton, 20% polyester. Heather Grey is 70% cotton, 30% polyester. Charcoal Heather is 60% cotton, 40% polyester
- Front pouch pocket, matching drawstring and rib cuffs
- Note: If you like your hoodies baggy go 2 sizes up
- 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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