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querySelectorAll vs filter
(version: 0)
Comparing performance of:
Filter vs Query selector
Created:
4 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
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Tests:
Filter
const divs = document.querySelectorAll( 'div' ); const filtered = Array.from( divs ).filter( ( div ) => div.classList.contains( 'test' ) );
Query selector
const divs = document.querySelectorAll( 'div' ); const filtered = document.querySelectorAll( '.test' )
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Filter
Query selector
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
It seems like you're asking for the performance comparison between two methods of filtering HTML elements. Based on the provided benchmark definitions and latest benchmark results, here's a summary: **Method 1: `Array.from(divs).filter((div) => div.classList.contains('test'))`** * **Benchmark Name:** Filter * **Raw Benchmark Definition:** `const divs = document.querySelectorAll( 'div' );\r\n\r\nconst filtered = Array.from( divs ).filter( ( div ) => div.classList.contains( 'test' ) );` * **Latest Result:** ExecutionsPerSecond: 48353.21875 This method uses the `Array.from()` function to convert the NodeList returned by `querySelectorAll()` into an array, and then applies a filter using the `filter()` method. **Method 2: `document.querySelectorAll('.test')`** * **Benchmark Name:** Query selector * **Raw Benchmark Definition:** `const divs = document.querySelectorAll( 'div' );\r\n\r\nconst filtered = document.querySelectorAll( '.test' )` * **Latest Result:** ExecutionsPerSecond: 3196.610595703125 This method uses the query selector syntax to directly select elements with the class `'test'` from the DOM. **Comparison:** The latest benchmark results show that Method 1 (`Filter`) outperforms Method 2 (`Query selector`) by a significant margin, with approximately 15 times fewer executions per second. This suggests that filtering an array of elements using `Array.from()` and `filter()` is more efficient than using the query selector API to select elements directly from the DOM. However, it's essential to note that this might depend on the specific use case, HTML structure, and browser performance. If you need to filter a large number of elements with different class names, using the query selector syntax might be more suitable due to its flexibility and specificity.
Related benchmarks:
querySelector vs getElementsByClassName with multiple matching nodes
querySelectorAll vs getElementsByClassName Test
querySelectorAll vs getElementsByClassName Test2
querySelector vs querySelectorAll simple (single element result)
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