Run results for: Array ForEach vs Find vs for loop (2)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Find

24K/s

For

9K/s

ForEach

3K/s

View exact numbers

Script Preparation code:

var arr = [];
for (var i = 0; i < 10000; i++) {
  arr[i] = i;
}
var needToFindThis = Math.floor((Math.random() * 10000) + 1);

Tests:

ForEach
var indexFound = -1; arr.forEach((item, index) => { if (item === needToFindThis) { indexFound = index; } });
Find
var indexFound = arr.find((item, index) => { if (item === needToFindThis) { return index; } });
For
var indexFound = -1; for (var i = 0; i < arr.length; i++) { if (arr[i] === needToFindThis) { indexFound = i; break; } }