Run results for: JS multiple parameters vs parameter object

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

New parameter object

4.9M/s

Parameter object with spreading

4.0M/s

Existing parameter object

3.8M/s

Multiple parameters

3.0M/s

View exact numbers

Test name	Executions per second
✓ New parameter object	4,859,280 Ops/sec
Parameter object with spreading	3,993,215 Ops/sec
Existing parameter object	3,798,074 Ops/sec
Multiple parameters	3,040,932 Ops/sec

Script Preparation code:

var data = { a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7 }

function f1(a, b, c, d, e, f, g) {
  return a + b + c + d + e + f + g;
}

function f2(p) {
  return p.a + p.b + p.c + p.d + p.e + p.f + p.g;
}

Tests:

Multiple parameters
f1(data.a, data.b, data.c, data.d, data.e, data.f, Math.random())
Existing parameter object
data.g = Math.random(); f1(data)
Parameter object with spreading
f1({ ...data, g: Math.random() })
New parameter object
f1({ a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: Math.random() })