Benchmark: Testing for false vs === undefined vs hasOwnProperty for undefined member vs hasown

Tests:

test truth
var n = {}; while(true) { if(!n.foo) break; }
test undefined
var n = {}; while(true) { if(n.foo===undefined) break; }
test hasOwnProperty
var n = {}; while(true) { if(!n.hasOwnProperty('foo')) break; }
test hasown
var n = {}; while(true) { if(!Object.hasOwn(n,'foo')) break; }

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

test truth

92.8M/s

test hasOwnProperty

49.0M/s

test undefined

6.0M/s

test hasown

5.4M/s

View exact numbers

Testing for false vs === undefined vs hasOwnProperty for undefined member vs hasown (version: 0)