Run results for: Object hasOwnProperty vs Set has

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Set Lookup

142.9M/s

Object Lookup

86.6M/s

View exact numbers

Test name	Executions per second
✓ Set Lookup	142,918,784 Ops/sec
Object Lookup	86,618,800 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')