Run results for: get x versus array[0]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
array[0]	10427.7 Ops/sec
set / get	1151.4 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;
    }
};

​x
 
// Setup phase - common for both testsconst 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];
}

 
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;
}

 
let sum = 0;for (let i = 0; i < size; i++) {    obj.x = Math.random () * 1000;    sum += obj.x;}