Run results for: map vs if vs switch

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_6_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.6.2

Device Platform: Mobile

Date tested: 9 months ago

if/else

480.1M/s

map lookup

414.1M/s

switch case

386.6M/s

View exact numbers

Test name	Executions per second
✓ if/else	480,059,232 Ops/sec
map lookup	414,086,880 Ops/sec
switch case	386,572,032 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);