Run results for: Bind vs closure declaration

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.5.1

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

create closure

4.2M/s

use closure()

4.1M/s

create bind

3.5M/s

use bind

3.3M/s

View exact numbers

Test name	Executions per second
✓ create closure	4,207,856 Ops/sec
use closure()	4,124,571 Ops/sec
create bind	3,462,138 Ops/sec
use bind	3,306,912 Ops/sec

Script Preparation code:

function toBind(param) {
  return param * 2;
}
function bind() {
  var rnd = Math.random();
  return toBind.bind(null, rnd);
}

function closure() {
  var rnd = Math.random();
  return inner;
  function inner() {
    return rnd * 2;
  }
}

Tests:

create bind
var fnc = bind();
create closure
var fnc = closure()
use bind
var fnc = bind(); var out = fnc();
use closure()
var fnc = closure(); var out = fnc();