Run results for: Objects vs Maps longer test

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/110.0

Browser: Firefox 110

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object Insertion	45751.5 Ops/sec
Map insertion	2881.4 Ops/sec
Object Insertion Overwrites	41248.7 Ops/sec
Map insertion overwrites	3325.4 Ops/sec
Object simulated usage	13651.5 Ops/sec
Map simulated usage	1041.8 Ops/sec

Script Preparation code:

var map = new Map();
var obj = {};

var iterations = 1000000;
var tenthOfIterations = iterations / 10;

Tests:

Object Insertion
for (let i = 0; i < iterations; i++) { obj[i] = i; }
Map insertion
for (let i = 0; i < iterations; i++) { map.set(i, i); }
Object Insertion Overwrites
for (let i = 0; i < iterations; i++) { obj[i % 10] = i; }
Map insertion overwrites
for (let i = 0; i < iterations; i++) { map.set(i % 10, i); }
Object simulated usage
for (let i = 0; i < iterations; i++) { obj[i] = i; } for (let i = 0; i < iterations; i++) { obj[i % 10] = obj[i]; } for (let i = 0; i < tenthOfIterations; i++) { delete obj[i * 10]; }
Map simulated usage
for (let i = 0; i < iterations; i++) { map.set(i, i); } for (let i = 0; i < iterations; i++) { map.set(i % 10, map.get(i)); } for (let i = 0; i < tenthOfIterations; i++) { map.delete(i * 10); }