Benchmark: indexOf vs findIndex vs for vs while vs indexed - 2000 items

Script Preparation code:

var exampleItem1 = 'You will never find me!';
var exampleItem2 = 'I am invisible!';
var exampleArray = Array(2000).fill('').map((x, i) => x + (i + 1));
var compare1 = x => x === exampleItem1;
var compare2 = x => x === exampleItem2;

Tests:

findIndex
exampleArray.findIndex(compare1); exampleArray.findIndex(compare2);
indexOf
exampleArray.indexOf(exampleItem1); exampleArray.indexOf(exampleItem2);
for
let index1 = null; let index2 = null; for (let i = 0, l = exampleArray.length; i < l; i += 1) { if (index1 === null && compare1(exampleArray[i])) { index1 = i; continue; } if (index2 === null && compare2(exampleArray[i])) { index2 = i; continue; } if (index1 !== null && index2 !== null) break; }
while
let index1 = null; let index2 = null; let i = -1, l = exampleArray.length; while (++i < l) { if (index1 === null && compare1(exampleArray[i])) { index1 = i; continue; } if (index2 === null && compare2(exampleArray[i])) { index2 = i; continue; } if (index1 !== null && index2 !== null) break; }
indexed
const indexes = {}; for (let i = 0, l = exampleArray.length; i < l; i += 1) { indexes[exampleArray[i]] = i; } let index1 = indexes[exampleItem1]; let index2 = indexes[exampleItem2];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
findIndex
indexOf
for
while
indexed

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36

Browser/OS: Chrome 86 on Windows

View result in a separate tab

Test name	Executions per second
findIndex	2706.2 Ops/sec
indexOf	178326.1 Ops/sec
for	1068.8 Ops/sec
while	1052.7 Ops/sec
indexed	5274.8 Ops/sec

indexOf vs findIndex vs for vs while vs indexed - 2000 items (version: 0)

Comparing performance of: findIndex vs indexOf vs for vs while vs indexed

Created: 3 years ago by: Registered User

Jump to the latest result

findIndex

indexOf

for

while

indexed

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A