MeasureThat.net

Run results for: Object key access vs array find vs map

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

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
5 months ago
Test name Executions per second
Object access 64249944.0 Ops/sec
Array find 10818732.0 Ops/sec
Map get 49783916.0 Ops/sec
Script Preparation code:
​x
 
var items = Array.from(Array(1000), (_, x) => ({
    key: x,
    value: x * 10
}));
​
var objContainer = {};
var arrContainer = [];
var mapContainer = new Map();
​
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);
    mapContainer.set(item.key, item)
}
Tests:

  • Object access

     
    items.every(item => objContainer[item.key])

  • Array find

     
    items.every(item => arrContainer.find(containerItem => containerItem.key === item.key))

  • Map get

     
    items.every(item => mapContainer.get(item.key))