Run results for: switch vs if else vs do while vs object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
switch	16338544.0 Ops/sec
if else	4373649.5 Ops/sec
do while 0	4370581.5 Ops/sec
object	16349788.0 Ops/sec

Script Preparation code:

var a = 'yhahaha';

AخA
 
var a = 'yhahaha';

Tests:

switch

var b;
switch(a) {
  case 'ahaha': 
    b = 1; 
    break;
  case 'ohoho': 
    b = 2; 
    break;
  case 'ihihi': 
    b = 3; 
    break;
  case 'yhahaha': 
    b = 4; 
    break;
}

 
var b;switch(a) {  case 'ahaha':     b = 1;     break;  case 'ohoho':     b = 2;     break;  case 'ihihi':     b = 3;     break;  case 'yhahaha':     b = 4;     break;}

if else

var b;

if (a === 'ahaha') {
  b = 1;
} else if (a === 'ohoho') {
  b = 2;
} else if (a === 'ihihi') {
  b = 3;
} else if (a === 'yhahaha') {
  b = 4;
}

​x
 
var b;​if (a === 'ahaha') {  b = 1;} else if (a === 'ohoho') {  b = 2;} else if (a === 'ihihi') {  b = 3;} else if (a === 'yhahaha') {  b = 4;}    

do while 0

var b;

do {
  if (a === 'ahaha') {
    b = 1;
    break;
  }
  if (a === 'ohoho') {
    b = 2;
    break;
  }
  if (a === 'ihihi') {
    b = 3;
    break;
  }
  if (a === 'yhahaha') {
    b = 4;
  }  
} while(0)

 
var b;​do {  if (a === 'ahaha') {    b = 1;    break;  }  if (a === 'ohoho') {    b = 2;    break;  }  if (a === 'ihihi') {    b = 3;    break;  }  if (a === 'yhahaha') {    b = 4;  }  } while(0)

object

var b = {
  ahaha: 1,
  ohoho: 2,
  ihihi: 3,
  yhahaha: 4,
}[a]

 
var b = {  ahaha: 1,  ohoho: 2,  ihihi: 3,  yhahaha: 4,}[a]