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

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

Has key in Set

222.4M/s

Has key in Map

216.0M/s

Has key in Object

214.0M/s

Get from Object

200.1M/s

Get from Map

193.6M/s

Get from Array

190.8M/s

Has key in Array OLD

80.7M/s

Has key in Array NEW

80.3M/s

View exact numbers

Test name	Executions per second
✓ Has key in Set	222,430,672 Ops/sec
Has key in Map	216,034,960 Ops/sec
Has key in Object	214,039,232 Ops/sec
Get from Object	200,134,096 Ops/sec
Get from Map	193,566,592 Ops/sec
Get from Array	190,794,672 Ops/sec
Has key in Array OLD	80,746,200 Ops/sec
Has key in Array NEW	80,329,016 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');