Benchmark: lodash vs plain vanilla js performance on countby

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var products = {
                product1 : {Category: 'category1', Brand: 'brand1'},
                product2 : {Category: 'category1', Brand: 'brand2'},
                product3 : {Category: 'category2', Brand: 'brand3'},
                product4 : {Category: 'category2', Brand: 'brand3'}
         }
for(var i=5; i<900; i++) {
    (i%2==0) ? products['product'+i] = {Category: 'category'+(i-1), Brand: 'brand'+(i-1)} : 
                            products['product'+i] = {Category: 'category'+i, Brand: 'brand'+i};
}
var uniqueCategoriesPresentAcrossProducts = new Set();
var level = 'Category';
var count = 0;

Tests:

vanilla js foreach Iter using set
_.countBy(products, level); Object.keys(products).length
lodash countBy
Object.keys(products).forEach(product => uniqueCategoriesPresentAcrossProducts.has(products[product][level]) ? null : uniqueCategoriesPresentAcrossProducts.add(products[product][level]) );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
vanilla js foreach Iter using set
lodash countBy

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
vanilla js foreach Iter using set	15443.7 Ops/sec
lodash countBy	7131.7 Ops/sec

lodash vs plain vanilla js performance on countby (version: 0)

Comparing performance of: vanilla js foreach Iter using set vs lodash countBy

Created: one year ago by: Guest

Jump to the latest result

vanilla js foreach Iter using set

lodash countBy

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A