Benchmark: Object arrays: findIndex vs for loop start from some index

Script Preparation code:

var arr = new Array(15000);
arr.fill({ id: 0 });
arr = arr.map((el, idx) => el.id = idx);
var foo = Math.floor(Math.random() * 15000);
var startIndex = 7500;

Tests:

findIndex
arr.findIndex((m,i) => i >= startIndex && m.id === foo);
for loop
for (let i = startIndex; i < arr.length; i++) { if (arr[i].id === foo) break; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
findIndex
for loop

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser/OS: Firefox 135 on Windows

View result in a separate tab

for loop

39K/s

findIndex

4K/s

View exact numbers

Test name	Executions per second
✓ for loop	38,791 Ops/sec
findIndex	3,886 Ops/sec

Object arrays: findIndex vs for loop start from some index (version: 1)

Testing finding an object array via findIndex or by using a for loop starting from some index

Comparing performance of: `findIndex vs for loop`

Created: one year ago by: Registered User

Go to the latest result

findIndex

for loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Object arrays: findIndex vs for loop start from some index (version: 1)

Testing finding an object array via findIndex or by using a for loop starting from some index

Comparing performance of: findIndex vs for loop

Created: one year ago by: Registered User

Go to the latest result

findIndex

for loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `findIndex vs for loop`