Run results for: Sparse Array Vs. Object,Map,Set, Number Indexes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
Object	458.0 Ops/sec
Array	461.4 Ops/sec
Set Length Array	455.2 Ops/sec
TypedArray	462.7 Ops/sec
map	366.4 Ops/sec
set	352.3 Ops/sec

Script Preparation code:

var iterations =100000;
var obj = {};
var arr = [];
var map = new Map();
var set = new Set();
var setLengthArr = new Array(iterations);
var typedArray = new Uint32Array(iterations);

Tests:

Object
for(let i=0;i<iterations;i+=10){ obj[i]=Math.floor(Math.random()*iterations); obj[i+1]=obj[i]+1; }
Array
for(let i=0;i<iterations;i+=10){ arr[i]=Math.floor(Math.random()*iterations); arr[i+1]= arr[i]+1; }
Set Length Array
for(let i=0;i<iterations;i+=10){ setLengthArr[i]=Math.floor(Math.random()*iterations); setLengthArr[i+1] = setLengthArr[i]+1; }
TypedArray
for(let i=0;i<iterations;i+=10){ typedArray[i]=Math.floor(Math.random()*iterations); typedArray[i+1]= typedArray[i]+1; }
map
for(let i=0;i<iterations;i+=10){ map.set(i,Math.floor(Math.random()*iterations)); map.set(i+1,map.get(i)+1) }
set
for(let i=0;i<iterations;i+=10){ set.add(Math.floor(Math.random()*iterations)); set.add(set.has(i+1)) }

Run results for: Sparse Array Vs. Object,Map,Set, Number Indexes

Object

Array

Set Length Array

TypedArray

map

set