Run results for: Perf _.findWhere vs Native

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Native

32.6M/s

_.findWhere

12.2M/s

View exact numbers

Test name	Executions per second
✓ Native	32,559,104 Ops/sec
_.findWhere	12,193,585 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/underscore@1.13.1/underscore-umd-min.js"></script>

Script Preparation code:

function myFindWhere(array, criteria) {
    return array.find(item => Object.keys(criteria).every(key => item[key] === criteria[key]))
}

Tests:

_.findWhere
const array = [{"a":0, "b":1}, {"a":1}, {"b":1}]; const criteria = {"a":0}; _.findWhere(array, criteria);
Native
const array = [{"a":0, "b":1}, {"a":1}, {"b":1}]; const criteria = {"a":0}; myFindWhere(array, criteria);