Run results for: map vs if vs switch

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

switch case

176.7M/s

map lookup

166.1M/s

if/else

149.5M/s

View exact numbers

Test name	Executions per second
✓ switch case	176,699,104 Ops/sec
map lookup	166,121,440 Ops/sec
if/else	149,535,904 Ops/sec

Script Preparation code:

var map = new Map([
  [0, "Initializing"],
  [1, "Idle"],
  [2, "Running"]
]);
function switchCase(value) {
  switch (value) {
    case 0: return "Initializing";
    case 1: return "Idle";

    default: return "Running"
  }
}
function ifElse(value) {
  if (value === 0) {
    return "Initializing";
  } if (value === 1) {
    return "Idle";
  } 
  
  return "Running"
}

Tests:

map lookup
let value = map.get(0); value = map.get(32); value = map.get(1);
switch case
let value = switchCase(0); value = switchCase(32); value = switchCase(1);
if/else
let value = ifElse(0); value = ifElse(32); value = ifElse(1);