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

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; SM-G986B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.48 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	12147457.0 Ops/sec
Has key in Object	11821340.0 Ops/sec
Get from Map	11933017.0 Ops/sec
Has key in Map	11969726.0 Ops/sec
Get from Array	11810220.0 Ops/sec
Has key in Array OLD	9132209.0 Ops/sec
Has key in Array NEW	11863912.0 Ops/sec
Has key in Set	10316260.0 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