Run results for: Array for vs. some

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.108 Safari/537.36

Browser: Chrome 74

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Script Preparation code:

var arr = new Array(10000).fill(null);

Tests:

for
for (let i = 0; i < arr.length; i++) { if (i === 500) { return true; } }
optimized for
for (let i = 0, l = arr.length; i < l; i++) { if (i === 500) { return true; } }
includes
return arr.some((v, i) => i === 500);