Run results for: Access time Map vs Object

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object access	4180467.2 Ops/sec
Map access	4195355.0 Ops/sec

Script Preparation code:

const myVar = 'test'
const myMap = new Map();
const myObj = {};

for(let i = 0; i < 100; i++) {
  const newVar = `${myVar}${i}`;
  myMap.set(newVar, 0);
  myObj[newVar] = 0;
}

const length = 100000000;

Tests:

Object access
for (let i=0; i < length; i++) { myObj.test; }
Map access
for (let i=0; i < length; i++) { myMap.get('test'); }

Run results for: Access time Map vs Object

Object access

Map access