Run results for: Object Literal vs Prepared Array

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.2

Device Platform: Mobile

Date tested: one year ago

Object Literal

2.2M/s

Array Literal

2.1M/s

View exact numbers

Test name	Executions per second
✓ Object Literal	2,210,852 Ops/sec
Array Literal	2,134,418 Ops/sec

Script Preparation code:

let objLiteral = {
  0x0: ()=> {
    console.log('A');
  },
  0x1: ()=> {
    console.log('B');
  },
  0x2: ()=> {
    console.log('C');
  }
}

var arrayLiteral = [
  ()=> {
    console.log('A');
  },
  ()=> {
    console.log('B');
  },
  ()=> {
    console.log('C');
  }
];

Tests:

Object Literal
objLiteral[Math.floor(Math.random() * 0x3)]();
Array Literal
arrayLiteral[Math.floor(Math.random() * 0x3)]();