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filter vs querySelector 2
(version: 4)
Comparing performance of:
1 vs 2
Created:
6 years ago
by:
Registered User
Jump to the latest result
HTML Preparation code:
<input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select> <input class="test" value="1"> <select class="test"><option value="1">1</option></select>
Tests:
1
let select = document.querySelectorAll("select.test"); let input = document.querySelectorAll("input.test"); console.log(select) console.log(input) console.log("fin ------------------------------------------v1")
2
let test = document.querySelectorAll(".test"); let select = Array.from(test).filter(x => x.tagName == "SELECT"); let input = Array.from(test).filter(x => x.tagName == "INPUT"); console.log(select) console.log(input) console.log("fin ------------------------------------------v2")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
1
2
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
A large benchmark result! After analyzing the data, I'll try to provide some insights and possible explanations. **Observations** 1. **Test 2 has a higher number of executions per second**: This suggests that Test 2 is faster than Test 1. 2. **Both tests have similar raw UA strings**: This indicates that both tests are run on the same browser version (Chrome 78) with similar device platform and operating system settings. 3. **Test 2 has a higher number of executions per second**: This could be due to various factors such as: * Optimized JavaScript code * Improved rendering performance * Reduced DOM manipulation overhead **Possible explanations** 1. **Improved filtering algorithms**: The filter methods used in Test 2 (`Array.from(test).filter(x => x.tagName == "SELECT")` and `Array.from(test).filter(x => x.tagName == "INPUT")`) might be more efficient than the ones used in Test 1. 2. **Reduced unnecessary DOM selections**: By using `querySelectorAll` only once for both selects and inputs, Test 2 may avoid unnecessary reselections, which could improve performance. 3. **Other optimizations**: Without access to the actual code, it's difficult to determine if there are other optimizations or performance improvements in Test 2 that contribute to its faster execution. **Recommendations** 1. **Verify filtering algorithms**: Review the filtering algorithms used in both tests to ensure they are identical and efficient. 2. **Investigate DOM manipulation overhead**: Analyze the DOM manipulation code in both tests to identify potential bottlenecks or areas for improvement. 3. **Use profiling tools**: Utilize JavaScript profiling tools (e.g., Chrome DevTools) to gain a deeper understanding of performance bottlenecks in the code. Please let me know if you'd like more specific guidance on optimizing these tests!
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