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

Test name	Executions per second
findIndex	3885.9 Ops/sec
for loop	38790.5 Ops/sec

Related benchmarks:

Object arrays: findIndex vs for loop
Object arrays: findIndex vs forOf loop
Object arrays: findIndex vs for loop 2
findIndex vs for loop test
Object arrays: findIndex vs for loop 22
Object arrays: findIndex vs for loop (length cached)
Object arrays: findIndex vs for loop vs some
Object arrays: findIndex vs for loop (Small amount of entries)
findIndex vs for loop with plain number array

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

Jump to the latest result

findIndex

for loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A