JS performance

Is number? - {Shorts}

A few neat ways of checking for numbers using JavaScript

Globals

const data = [ ...new Array(1000).fill(0).map(() => Math.random() > 0.5 ? ~~(Math.random() * 10) : "nop") ]

Cases

0 ops/s
data.filter(x => !isNaN(parseInt(x)))
0 ops/s
data.filter(x => x < 0 || x > 0)
0 ops/s
data.filter((x) => !isNaN(x))

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