Run results for: slice VS splice VS shift for fixed size list of objects

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36

Browser: Chrome 85

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var list = [];
for (let i = 0; i < 1000; i++) {
  list.push({'s':'usd', 'p':i});
}

Tests:

slice
list.push({'s':'cad', 'p':13}) list.push({'s':'cad', 'p':14}) list.push({'s':'cad', 'p':15}) if(list.length>1000){ list=list.slice(list.length-1000) }
splice
list.push({'s':'cad', 'p':13}) list.push({'s':'cad', 'p':14}) list.push({'s':'cad', 'p':15}) if(list.length>1000){ list.splice(0, list.length-1000); }
shift -while
list.push({'s':'cad', 'p':13}) list.push({'s':'cad', 'p':14}) list.push({'s':'cad', 'p':15}) while(list.length>1000){ list.shift(); }
shift-for
list.push({'s':'cad', 'p':13}) list.push({'s':'cad', 'p':14}) list.push({'s':'cad', 'p':15}) for(let i=0; i<(list.length-998); i++){ list.shift(); }