Run results for: Access Object, Map, Array, Set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Get from Object	183953296.0 Ops/sec
Has key in Object	173428016.0 Ops/sec
Get from Map	184000496.0 Ops/sec
Has key in Map	186073856.0 Ops/sec
Get from Array	159974096.0 Ops/sec
Has key in Array OLD	66144508.0 Ops/sec
Has key in Array NEW	68036296.0 Ops/sec
Has key in Set	177044176.0 Ops/sec

Script Preparation code:

var obj = {"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 arr = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"];
var set = new Set(["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"]);

Tests:

Get from Object
var value = obj['ten'];
Has key in Object
var has = 'ten' in obj;
Get from Map
var value = map.get('ten');
Has key in Map
var has = map.has('ten');
Get from Array
var value = arr[9];
Has key in Array OLD
var has = arr.indexOf('ten') > -1;
Has key in Array NEW
var has = arr.includes('ten');
Has key in Set
var has = set.has('ten');

Run results for: Access Object, Map, Array, Set

Get from Object

Has key in Object

Get from Map

Has key in Map

Get from Array

Has key in Array OLD

Has key in Array NEW

Has key in Set