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for condition
(version: 0)
Comparing performance of:
out vs in
Created:
4 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <div class="target"> <ul class="tabList"><li class="is-active"><button type="button">보디빌딩</button></li><li><button type="button">복싱</button></li><li><button type="button">역도</button></li><li><button type="button">볼링</button></li><li><button type="button">당구</button></li><li><button type="button">아이스하키</button></li><li><button type="button">탁구</button></li><li><button type="button">빙상</button></li><li><button type="button">유도</button></li><li><button type="button">불명</button></li><li><button type="button">레슬링</button></li><li><button type="button">야구</button></li><li><button type="button">축구</button></li><li><button type="button">승마</button></li><li><button type="button">스키</button></li><li><button type="button">태권도</button></li><li><button type="button">핀수영</button></li><li><button type="button">럭비</button></li><li><button type="button">하키</button></li><li><button type="button">게이트볼</button></li><li><button type="button">검도</button></li><li><button type="button">수영</button></li><li><button type="button">수상스키·웨이크보드</button></li><li><button type="button">에어로빅</button></li><li><button type="button">핸드볼</button></li><li><button type="button">트라이애슬론(철인3종경기)</button></li><li><button type="button">테니스</button></li><li><button type="button">배드민턴</button></li><li><button type="button">컬링</button></li><li><button type="button">카누</button></li><li><button type="button">파크골프</button></li><li><button type="button">루지</button></li><li><button type="button">요트</button></li><li><button type="button">농구</button></li><li><button type="button">우슈</button></li><li><button type="button">사격</button></li><li><button type="button">족구</button></li><li><button type="button">스포츠댄스</button></li><li><button type="button">세팍타크로</button></li><li><button type="button">씨름</button></li><li><button type="button">궁도</button></li><li><button type="button">바둑</button></li><li><button type="button">스쿼시</button></li><li><button type="button">배구</button></li><li><button type="button">소프트테니스</button></li><li><button type="button">카라테</button></li><li><button type="button">자전거</button></li><li><button type="button">체조</button></li><li><button type="button">육상</button></li><li><button type="button">골프</button></li><li><button type="button">펜싱</button></li><li><button type="button">패러글라이딩</button></li><li><button type="button">조정</button></li><li><button type="button">양궁</button></li><li><button type="button">산악</button></li><li><button type="button">주짓수</button></li></ul></div>
Tests:
out
var target = $('.target'); var lis = target.find('.tabList li'); for(var listLen = 0; listLen < lis.length; listLen++ ){ console.log(1); }
in
var target = $('.target'); for(var listLen = 0; listLen < target.find('.tabList li').length; listLen++ ){ console.log(1); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
out
in
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of MeasureThat.net and analyze the provided benchmark. **Benchmark Definition JSON** The provided Benchmark Definition JSON represents a JavaScript microbenchmark that tests the execution performance of two different approaches: using `find()` method followed by iteration, and using a direct array length check followed by iteration. The benchmark is designed to measure the performance difference between these two approaches. **Options Compared** There are two options compared in this benchmark: 1. **Option 1:** Using `find()` method followed by iteration * This approach uses the `find()` method to select elements with a specific class, and then iterates over the resulting array using a `for` loop. 2. **Option 2:** Direct array length check followed by iteration * This approach directly checks the length of the `.tabList li` array and then iterates over it using a `for` loop. **Pros and Cons** Here are some pros and cons of each option: 1. **Option 1 (find() method)**: * Pros: + Simplifies the code, as it eliminates the need for direct array length checks. + Can be more efficient if the selection is complex, as `find()` can stop iterating as soon as a match is found. * Cons: + May have performance overhead due to the additional method call and potential caching issues. 2. **Option 2 (direct array length check)**: * Pros: + Can be more efficient for large arrays, as it avoids the overhead of `find()` and potential caching issues. * Cons: + Requires manual indexing into the array, which can lead to errors if not done correctly. **Library Used** In this benchmark, jQuery is used as a library. The `$('.target')` and `$('.tabList li')` selectors are part of the jQuery API, which provides a convenient way to select elements in the DOM. **Special JS Feature/Syntax** There doesn't appear to be any special JavaScript features or syntax used in this benchmark that would impact its execution performance. **Other Alternatives** If you were to create a similar benchmark, you could also consider other approaches, such as: 1. **Using `querySelectorAll()` instead of `find()`**: This method can be more efficient for selecting elements with multiple selectors. 2. **Using a library like Lodash**: Lodash provides various utility functions that can simplify iteration and array manipulation tasks. Keep in mind that the choice of approach depends on the specific use case, and it's always a good idea to profile and test different options to determine which one performs best for your particular scenario.
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