Run results for: Map vs object for deletions - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Windows

Device Platform: Desktop

Date tested: 16 days ago

Test name	Executions per second
Add to Map	19066796.0 Ops/sec
Add to object	558145536.0 Ops/sec
Delete from Map	33403818.0 Ops/sec
Delete from object	32062274.0 Ops/sec

Script Preparation code:

var testMap = new Map();
var testObj = {};

Tests:

Add to Map
testMap.set('testKey', 1);
Add to object
testObj.testKey = 1;
Delete from Map
testMap.delete('testKey');
Delete from object
delete testObj.testKey;