Run results for: Delete vs undefined vs spread

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser: Chrome 114

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

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

Tests: