Run results for: Object hasOwnProperty vs Set has

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object Lookup	23328436.0 Ops/sec
Set Lookup	27005808.0 Ops/sec

Script Preparation code:

var data = [];
for (let i = 0; i < 5000; i += 1) {
    data.push(i.toString());
}
var obj = data.reduce((p, c) => {
    p[c] = true;
    return p;
}, {});

var set = new Set(data);

Tests:

Object Lookup
obj.hasOwnProperty('123')
Set Lookup
set.has('123')

Run results for: Object hasOwnProperty vs Set has

Object Lookup

Set Lookup