Run results for: get x versus array[0]

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/136.2 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 18

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

array[0]

77K/s

set / get

75K/s

View exact numbers

Test name	Executions per second
✓ array[0]	76,787 Ops/sec
set / get	75,136 Ops/sec

Script Preparation code:

// Setup phase - common for both tests
const size = 10000;
const array = new Array(16).fill(1); // Fill array with ones for consistency

const obj = {
    get x() {
        return array[0];
    },

    set x(value) {
        array[0] = value;
    }
};

Tests:

array[0]
let sum = 0; for (let i = 0; i < size; i++) { array[0] = Math.random () * 1000; sum += array[0]; }
set / get
let sum = 0; for (let i = 0; i < size; i++) { obj.x = Math.random () * 1000; sum += obj.x; }