Run results for: switch function vs switch inline vs object vs Map

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
switch function	20525988.0 Ops/sec
switch inline	32947854.0 Ops/sec
object	164263936.0 Ops/sec
Map	696350016.0 Ops/sec

Script Preparation code:

const getSwitch = function (input) {
	switch(input) {
      	case 0:
        	return 'zero';
    	case 1:
      		return 'one';
    	case 2:
      		return 'two';
    	case 3:
      		return 'three';
    	case 4:
      		return 'four';
     	case 5:
      		return 'five';
    	case 6:
      		return 'six';
    	case 7:
      		return 'seven';
    	case 8:
      		return 'eight';
      	case 9:
      		return 'nine';
    	case 10:
      		return 'ten';
  	}
}

const LUT = {
	0: 'zero',
  	1: 'one',
  	2: 'two',
  	3: 'three',
  	4: 'four',
  	5: 'five',
  	6: 'six',
  	7: 'seven',
  	8: 'eight',
  	9: 'nine',
  	10: 'ten'
}

const map = new Map([
  [0, 'zero'],
  [1, 'one'],
  [2, 'two'],
  [3, 'three'],
  [4, 'four'],
  [5, 'five'],
  [6, 'six'],
  [7, 'seven'],
  [8, 'eight'],
  [9, 'nine'],
  [10, 'ten']
]);

Tests:

switch function
const result = getSwitch(Math.floor(Math.random() * 10));
switch inline
let result; switch(Math.floor(Math.random() * 10)) { case 0: result = 'zero'; break; case 1: result = 'one'; break; case 2: result = 'two'; break; case 3: result = 'three'; break; case 4: result = 'four'; break; case 5: result = 'five'; break; case 6: result = 'six'; break; case 7: result = 'seven'; break; case 8: result = 'eight'; break; case 9: result = 'nine'; break; case 10: result = 'ten'; break; }
object
const result = LUT[Math.floor(Math.random() * 10)];
Map
const result = map.get(Math.floor(Math.random() * 10));