Run results for: Array.some vs for loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

some

724K/s

for

580K/s

View exact numbers

Test name	Executions per second
✓ some	723,605 Ops/sec
for	579,678 Ops/sec

Script Preparation code:

var array = new Array(1000).fill('');
array = array.map((tem, idx) => idx)
var result = false;

Tests:

for
for (var i = 0; i < array.length; i++) { if (array[i] === 888) { result = true; break; } }
some
result = array.some(function(i) { return array[i] === 888; });