Stop Doing NaNs

Error handling Type coercion Nan Floating point Undefined Javascript quirks Ieee754 Division-by-zero

Javascript Programming Debugging Frontend Webdev

5 days ago 53,941 views 0 shares

Stop Doing NaNs

javascript-memes, nan-memes, ieee754-memes, programming-memes, floating-point-memes | ProgrammerHumor.io

Ah, the eternal JavaScript nightmare: NaN (Not a Number) - which ironically is a number type that doesn't equal itself. Because that makes perfect sense!

The IEEE 754 floating-point standard really outdid itself here. "Let's create a special value that represents calculation errors but make it behave in the most counterintuitive ways possible!"

My favorite part is JavaScript trying to be helpful: "You want to convert 'hello' to a number? Sure thing! Here's a NaN for your trouble. No errors thrown, just silent mathematical chaos." And then we wonder why our date calculations suddenly think it's the year NaN.

The hex(983061) at the bottom is the cherry on top - it's 0xF00D61, or "FOOD A1". Even the hexadecimal is trolling us.

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