Run results for: Delete vs set undefined

Run details:

User agent: Mozilla/5.0 (Android 10; Mobile; rv:104.0) Gecko/104.0 Firefox/104.0

Browser: Firefox Mobile 104

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Delete	6902674.0 Ops/sec
Set undefined	110642100.0 Ops/sec

Script Preparation code:

var obj = {a:1, b:2, c:3, d:4};

Tests:

Delete
delete obj.a; delete obj.b; delete obj.c; delete obj.d;
Set undefined
obj.a = undefined; obj.b = undefined; obj.c = undefined; obj.d = undefined;