Run results for: Bind vs closure declaration

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.0.1

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

create closure

12.7M/s

use closure()

12.0M/s

create bind

11.0M/s

use bind

9.9M/s

View exact numbers

Test name	Executions per second
✓ create closure	12,652,181 Ops/sec
use closure()	11,996,152 Ops/sec
create bind	11,033,498 Ops/sec
use bind	9,895,203 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();