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

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0

Browser: Firefox 100

Operating system: Windows 7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Get from Object	807153024.0 Ops/sec
Has key in Object	808656768.0 Ops/sec
Get from Map	819901824.0 Ops/sec
Has key in Map	820456320.0 Ops/sec
Get from Array	840379968.0 Ops/sec
Has key in Array OLD	12879765.0 Ops/sec
Has key in Array NEW	11876227.0 Ops/sec
Has key in Set	812494272.0 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