Run results for: Object key access vs array find 100 items yeh ok

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1

Device Platform: Mobile

Date tested: one year ago

Object access

156K/s

Array find

61K/s

View exact numbers

Test name	Executions per second
✓ Object access	155,812 Ops/sec
Array find	61,349 Ops/sec

Script Preparation code:

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

Tests:

Object access
items.forEach(item => objContainer[item.value])
Array find
items.forEach(item => arrContainer.find(containerItem => containerItem.value === item.value))

Run results for: Object key access vs array find 100 items yeh ok

Test speed of object access by key vs array find to find object

Object access

Array find