Run results for: benchmark for time Array access vs Object access for loop

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Array

96K/s

Object

94K/s

View exact numbers

Test name	Executions per second
✓ Array	95,784 Ops/sec
Object	93,949 Ops/sec

Script Preparation code:

var items = Array.from(Array(100), (_, x) => ({
    key: x,
    value: x * 10
}));

var objContainer = {};
var arrContainer = [];

for (let i = 0; i <= 100; ++i) {
    const item = items[i];
    objContainer[i] = item;
    arrContainer.push(item);
}

Tests:

Array
for (let i = 0; i < items.length; ++i) arrContainer[i];
Object
for (let i = 0; i < items.length; ++i) objContainer[i];