Run results for: set.has vs string equals

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

fn2

14.1M/s

fn1

7.3M/s

View exact numbers

Test name	Executions per second
✓ fn2	14,079,640 Ops/sec
fn1	7,273,926 Ops/sec

Script Preparation code:

var keys = new Set([
	'a',
  'b',
  'c',
  'd',
  'e',
  'f'
])

var fn1 = (key) => keys.has(key)
var fn2 = (key) => key === 'a' || key === 'b' || key === 'c' || key === 'd' || key === 'e' || key === 'f'

Tests:

fn1
fn1('e') fn1('z')
fn2
fn2('e') fn2('z')