Run results for: test5 delete - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36

Browser: Chrome 90

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
delete o.p	7168418.0 Ops/sec
delete o["p"]	7609620.5 Ops/sec
o.p = undefined	4477165.0 Ops/sec
o["p"] = undefined;	4533441.0 Ops/sec
o.p = null	12971657.0 Ops/sec
o["p"] = null	12988417.0 Ops/sec

Script Preparation code:

var o = { p: "p" };

Tests:

delete o.p
delete o.p;
delete o["p"]
delete o["p"];
o.p = undefined
o.p = undefined;
o["p"] = undefined;
o["p"] = undefined;
o.p = null
o.p = null;
o["p"] = null
o["p"] = null;