Run results for: Set vs Object vs Map (has/in) vs array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Set

206.2M/s

Object

188.4M/s

Map

186.8M/s

Array

17.2M/s

View exact numbers

Test name	Executions per second
✓ Set	206,231,456 Ops/sec
Object	188,398,240 Ops/sec
Map	186,798,416 Ops/sec
Array	17,225,504 Ops/sec

Script Preparation code:

var set = new Set(["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"]);
var object = {"one": true, "two": true, "three": true, "four": true, "five": true, "six": true, "seven": true, "eight": true, "nine": true, "ten": true};
var map = new Map([["one", true], ["two", true], ["three", true], ["four", true], ["five", true], ["six", true], ["seven", true], ["eight", true], ["nine", true], ["ten", true]]);

var values = Object.keys(object);

Tests:

Set
set.has('one'); set.has('two'); set.has('three'); set.has('four'); set.has('five'); set.has('six'); set.has('seven'); set.has('eight'); set.has('nine'); set.has('ten');
Object
'one' in object; 'two' in object; 'three' in object; 'four' in object; 'five' in object; 'six' in object; 'seven' in object; 'eight' in object; 'nine' in object; 'ten' in object;
Map
map.has('one'); map.has('two'); map.has('three'); map.has('four'); map.has('five'); map.has('six'); map.has('seven'); map.has('eight'); map.has('nine'); map.has('ten');
Array
values.includes('one'); values.includes('two'); values.includes('three'); values.includes('four'); values.includes('five'); values.includes('six'); values.includes('seven'); values.includes('eight'); values.includes('nine'); values.includes('ten');

Run results for: Set vs Object vs Map (has/in) vs array

Compare the speed to retrieve a value from three data structures that can be used for boolean referencing; i.e. for mapping enabled settings.

Set

Object

Map

Array