Run results for: JS indexOf + array vs object + if

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; SAMSUNG SM-J810G) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/16.0 Chrome/92.0.4515.166 Mobile Safari/537.36

Browser: Chrome Mobile 92

Operating system: Android

Device Platform: Mobile

Date tested: 3 months ago

Test name	Executions per second
indexOf + array	1186.2 Ops/sec
object + if	6067.7 Ops/sec

Script Preparation code:

var arr = [];
var obj = {};

Tests:

indexOf + array
arr.push('a'); arr.push('e'); arr.push('f'); arr.push('d'); if(arr.indexOf('a') != -1){ console.log('a'); } if(arr.indexOf('b') != -1){ console.log('b'); } if(arr.indexOf('c') != -1){ console.log('c'); } if(arr.indexOf('d') != -1){ console.log('d'); }
object + if
obj.a = true; obj.e = true; obj.f = true; obj.d = true; if(obj.a){ console.log('a'); } if(obj.b){ console.log('b'); } if(obj.c){ console.log('c'); } if(obj.d){ console.log('d'); }