Benchmark: findIndex vs map with indexOf

Script Preparation code:

var array = [];
for (var i = 0; i < 300; ++i) {
    array.push({
        'id': i,
        'name': 'test-' + i
    });
}

function hasWithIndexOf(id) {
    return array.findIndex(i => i.id === id);
}

var map = array.map(i => i.id);

function hasWithMap(id) {
    return map.indexOf(id);
}

Tests:

Array index of
for (var i=0; i<100; ++i) { hasWithIndexOf('404'); }
Map index of
for (var i=0; i<100; ++i) { hasWithMap('404'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array index of
Map index of

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0

Browser/OS: Firefox 113 on Windows

View result in a separate tab

Test name	Executions per second
Array index of	29467.6 Ops/sec
Map index of	92863.5 Ops/sec

findIndex vs map with indexOf (version: 0)

Comparing performance of: Array index of vs Map index of

Created: 11 months ago by: Guest

Jump to the latest result

Array index of

Map index of

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A