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

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; A11 Pro Max) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.58 Mobile Safari/537.36

Browser: Chrome Mobile 99

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Get from Object	4778396.5 Ops/sec
Has key in Object	4780395.5 Ops/sec
Get from Map	4792893.5 Ops/sec
Has key in Map	4793488.0 Ops/sec
Get from Array	4718477.0 Ops/sec
Has key in Array OLD	3849751.8 Ops/sec
Has key in Array NEW	4696588.0 Ops/sec
Has key in Set	4203590.5 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