Run results for: isInteger vs Regexp

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Browser: Firefox 63

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Regexp	3428083.0 Ops/sec
isInteger	18339670.0 Ops/sec

Script Preparation code:

let arr = [];
const fin = Number((Math.random() * 10).toFixed())
for (let i = 0; i <= fin; i++) { arr.push(i); }

Tests: