Run details:
Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/7.0)
IE 10
Windows 8
Desktop
3 years ago
Test name Executions per second
delete o.p 29175440.0 Ops/sec
delete o["p"] 29379154.0 Ops/sec
o.p = undefined 11091413.0 Ops/sec
o["p"] = undefined; 10816898.0 Ops/sec
o.p = null 71930024.0 Ops/sec
o["p"] = null 75011888.0 Ops/sec
Script Preparation code:
Tests:
  • delete o.p

  • delete o["p"]

  • o.p = undefined

  • o["p"] = undefined;

  • o.p = null

  • o["p"] = null