Run results for: Delete vs set undefined

Run details:

User agent: Mozilla/5.0 (Linux; Android 7.0; FRD-L09) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.104 Mobile Safari/537.36

Browser: Chrome Mobile 96

Operating system: Android 7.0

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Delete	1058910.0 Ops/sec
Set undefined	361065.1 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;