Run results for: switch vs if vs object selector

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; SAMSUNG SM-G960F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/11.1 Chrome/75.0.3770.143 Mobile Safari/537.36

Browser: Chrome Mobile 75

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Switch	555174.2 Ops/sec
If (else)	566667.0 Ops/sec
Object selector	763098.6 Ops/sec

Script Preparation code:

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}

Tests:

Switch
let x= ""; const i = getRandomInt(6); switch(i) { case 0: x= "Zero"; break; case 1: x= "One"; break; case 2: x= "Two"; break; case 3: x= "Three"; break; case 4: x= "Four"; break; case 5: x= "Five"; break; }
If (else)
let x = ""; const i = getRandomInt(6); if (i === 0) x = "Zero" else if (i === 1) x = "One" else if (i === 2) x = "Two" else if (i === 3) x = "Three" else if (i === 4) x = "Four" else if (i === 5) x = "Five"
Object selector
let x = ""; const i = getRandomInt(6); x = { 0: "Zero", 1: "One", 2: "Two", 3: "Three", 4: "Four", 5: "Five", }[i];

Run results for: switch vs if vs object selector

Switch

If (else)

Object selector