Undefined Is Not Null: There Is a Difference – JavaScript Developer Humor Oversized T-Shirt
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$20.61
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Oversized T-ShirtHeavyweight tee, crewneck, oversized fit
$20.61
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- Premium oversized crewneck in a relaxed fit
- Versatile unisex silhouette for your everyday needs
- Our heaviest weight yet! 7 oz heavyweight 100% ring spun cotton jersey fabric designed to hold the boxy fit of the garment
- Dropped shoulders with roomy half sleeves
- Single needle, edge stitched ribbed collar
- The third party printer of this product is evaluated according to International Labor Organization standards
- The printer of this product sources blanks from manufacturers that are participating members of the Fair Labor Association
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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