Run results for: Object value comparison vs array find

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.6.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Object	30161.8 Ops/sec
Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Array	2424853.0 Ops/sec

Script Preparation code:

var items = Array.from(Array(1000), (_, x) => ({
    key: x,
    value1: Math.random() * 1000,
    value2: Math.random() * 1000
}));

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:

Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Object
var result = []; for (var k in objContainer) { if (objContainer[k].value1 >= 0 && objContainer[k].value1 <= 499 && objContainer[k].value2 >= 500 && objContainer[k].value2 <= 999) { result.push(k); } }
Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Array
var result = []; for (var item of arrContainer) { if (item.value1 >= 0 && item.value1 <= 499 && item.value2 >= 500 && item.value2 <= 999) { result.push(item.key); } }

Run results for: Object value comparison vs array find

Test speed of object value comparison vs array find to compare

Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Object

Get array of keys with value 1 between 0 and 499, and value 2 between 500 and 999 in Array