Benchmark: Array.find vs Array.indexOf vs Array.filter vs Map.has

Script Preparation code:

let array = [];
for (var i=0; i<300; ++i) {
  	array.push('00' + i);
}

function hasWithFind(needle) {
	return array.find((entry) => entry == needle) !== undefined;
}

function hasWithIndexOf(needle) {
	return array.indexOf(needle) !== -1;
}

function hasWithFilter(needle) {
	return array.filter((entry) => entry == needle).length > -1;
}

let map = {};
array.forEach(item => map[item] = true);

function hasWithMap(needle) {
	return needle in map;
}

Tests:

find
for (var i=0; i<100; ++i) { hasWithFind('404'); }
indexOf
for (var i=0; i<100; ++i) { hasWithIndexOf('404'); }
filter
for (var i=0; i<100; ++i) { hasWithFilter('404'); }
map
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
find
indexOf
filter
map

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
find	41397.4 Ops/sec
indexOf	49421.0 Ops/sec
filter	30091.1 Ops/sec
map	433176.8 Ops/sec

Array.find vs Array.indexOf vs Array.filter vs Map.has (version: 0)

Compare performance between Array.find vs Map.has

Comparing performance of: find vs indexOf vs filter vs map

Created: 2 months ago by: Guest

Jump to the latest result

find

indexOf

filter

map

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A