Run results for: Map vs Object2020 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0

Browser: Firefox 88

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Map lookup	3368.8 Ops/sec
Obj lookup	3308.7 Ops/sec
Map deletion	3362.2 Ops/sec
object deletion	2645.4 Ops/sec

Website performance monitoring

Script Preparation code:

var map = new Map();
var obj = {};

map.set(`${i}_a`, 5);
obj[`${i}_a`] = 5;

var i = 0,
    count = 1000,
    a;

Tests:

Map lookup
for (i = 0; i < count; i++) { a = map.get(`${i}_a`); }
Obj lookup
for (i = 0; i < count; i++) { a = obj[`${i}_a`]; }
Map deletion
for (i = 0; i < count; i++) { a = map.delete(`${i}_a`); }
object deletion
for (i = 0; i < count; i++) { obj[`${i}_a`] = undefined; }