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testing_classnames
(version: 0)
Comparing performance of:
classnames vs native vs native_second
Created:
4 years ago
by:
Guest
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HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/classnames/2.2.6/index.min.js'></script>
Script Preparation code:
var obj = { 'style-2': true, 'style-3': false, 'style-4': true, }
Tests:
classnames
let result = window.classNames(obj)
native
function classes(obj = {}) { return Object.keys(obj) .filter((key) => obj[key]) .join(' '); } let result = classes(obj)
native_second
function ts(...args){ let template = ''; args.forEach(arg => { if (typeof arg === 'string') { template += ' '+arg; return; } if (arg.join) { arg.forEach((e) => { template += ' ' + e; }) return; } let entries = Object.entries(arg); if (entries.length) { entries.forEach(entry => { if(entry[1]) template += ' ' + entry[0] }) } }) return template; } let result = ts(obj)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
classnames
native
native_second
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll explain the benchmarking process for MeasureThat.net. **Overview** MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks, comparing different approaches to achieve similar results. In this case, we're looking at benchmarks for the `classnames` library, which helps simplify CSS class manipulation in JavaScript. **Benchmark Definition** The benchmark definition provides the script preparation code, HTML preparation code, and a list of individual test cases. Let's break it down: * Script Preparation Code: This is a JavaScript object with three properties (`style-2`, `style-3`, and `style-4`) that will be used as input to the benchmarks. * Html Preparation Code: This includes a link to the `classnames` library (version 2.2.6) in a CDN. **Individual Test Cases** There are three test cases: 1. **classnames**: This benchmark uses the `classnames` library to join the classes of the input object `obj`. The script preparation code is simply assigned to a variable `obj`, and then passed to the `window.classNames()` function. 2. **native**: This benchmark implements its own class joining logic using a custom `classes()` function. The input object `obj` is created in the same way as the previous test case, but instead of using `classnames`, it's called with this custom function. 3. **native_second**: This benchmark also uses a custom implementation similar to `native`, but with some minor differences. **Library: classnames** The `classnames` library is a lightweight utility that simplifies CSS class manipulation in JavaScript. It takes an object with class names as input and returns a string of joined classes, separated by spaces or other separators (depending on the configuration). In this benchmark, `classnames` is used to join the classes of the input object `obj`, which contains three boolean values (`style-2`, `style-3`, and `style-4`). The expected result is a string containing only one class name if the value is `true`. **Special JavaScript Feature: Template Literals** The `native_second` test case uses template literals (introduced in ECMAScript 2015) to build the joined classes. Template literals are a feature that allows you to embed expressions inside string literals using backticks (`). In this case, the `ts()` function uses template literals to construct the joined classes. **Other Considerations** The benchmark results are compared across different browsers and devices. The `ExecutionsPerSecond` value represents the number of executions per second for each test case, which can help gauge performance differences between approaches. To analyze these benchmarks further, you could consider: * Using a profiler to identify performance bottlenecks in your code. * Experimenting with different input data or edge cases to see how your implementation handles unusual inputs. * Checking the library documentation and implementation details for `classnames` to understand its optimization strategies and trade-offs.
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