MeasureThat.net

Run results for: Object key access vs array find

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

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Chrome 135
Mac OS X 10.15.7
Desktop
25 days ago
Test name Executions per second
Object access 1308662.6 Ops/sec
Array find 1886.0 Ops/sec
Script Preparation code:
​x
 
var items = Array.from(Array(1000), (_,x) => ({key: x, value: x*10}));
​
var objContainer = {};
var arrContainer = [];
​
for (let i = 100; i >= 0; i--) {
  const index = Math.floor(Math.random() * 1000);
  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))