Run results for: Object Literal vs Prepared Array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object Literal	625627.3 Ops/sec
Array Literal	599903.4 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)]();

Run results for: Object Literal vs Prepared Array

Object Literal

Array Literal