Run results for: Array.find vs Array.indexOf vs Array.filter vs Map.has

Run details:

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: Chrome 119

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
find	41397.4 Ops/sec
indexOf	49420.9 Ops/sec
filter	30091.1 Ops/sec
map	433176.8 Ops/sec

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'); }

Run results for: Array.find vs Array.indexOf vs Array.filter vs Map.has

Compare performance between Array.find vs Map.has

find

indexOf

filter

map