Run results for: IndexOf array vs find object2

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 DuckDuckGo/7 Safari/605.1.15

Browser: Mobile Safari 15

Operating system: iOS 15.4

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Array	6749674.5 Ops/sec
Object	841701.8 Ops/sec

Script Preparation code:

var PLANETKEY = [
    'Sun',
    'Moon',
    'Mercury',
    'Venus',
    'Mars',
    'Jupiter',
    'Saturn',
    'Uranus',
    'Neptune'
];

var PLANETMAP = {
    i0: 'Sun',
    i1: 'Moon',
    i2: 'Mercury',
    i3: 'Venus',
    i4: 'Mars',
    i5: 'Jupiter',
    i6: 'Saturn',
    i7: 'Uranus',
    i8: 'Neptune'
};

Tests:

Array
PLANETKEY.indexOf('Neptune');
Object
Object.keys(PLANETMAP).find(k=>PLANETMAP[k]==='Neptune');

Run results for: IndexOf array vs find object2

Array

Object