Run results for: identifier at end of scope chain and end of prototype chain vs object lookup

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Object property lookup

38.4M/s

end of scope/prototype

23.7M/s

View exact numbers

Test name	Executions per second
✓ Object property lookup	38,395,224 Ops/sec
end of scope/prototype	23,714,406 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

let obj = {a:3}

Tests:

end of scope/prototype
hasOwnProperty.call(obj, 'a') hasOwnProperty.call(obj, 'b')
Object property lookup
[].hasOwnProperty.call(obj, 'a'); [].hasOwnProperty.call(obj, 'b')