Why NaN !== NaN in JavaScript (and the IEEE 754 story behind it)

We get the type number in response. Since something is a number, logic suggests we can perform mathematical operations on it. So let’s try adding something to it or checking its maximum or minimum value.

[jay-es]

NaN (Not a Number) についての深堀り記事。JavaScript の話だけでなく、NaN は IEEE 754 浮動小数点標準に由来していて 1985 年から存在していることなどを解説