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teste de fors
(version: 0)
Teste de foreach jquery e nativo
Comparing performance of:
jQuery vs Js
Created:
9 years ago
by:
Guest
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HTML Preparation code:
<script src="https://developers.google.com/speed/libraries/devguide#jquery"></script>
Script Preparation code:
var array = new Array (); for (var i=0; i<10000; i++) { array[i] = 0; }
Tests:
jQuery
console.time('jquery'); $.each (array, function (i) { array[i] = i; }); console.timeEnd('jquery');
Js
console.time('native'); var l = array.length; for (var i=0;i<l; i++) { array[i] = i; } console.timeEnd('native');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
jQuery
Js
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **What is being tested?** The provided JSON represents two individual test cases, each measuring the performance of iterating over an array using different methods: jQuery's `$.each` and native JavaScript's `for` loop. **Options compared** Two options are being compared: 1. **jQuery's `$.each`**: This method iterates over an array by executing a callback function for each element. The callback function receives the current index (`i`) as an argument. 2. **Native JavaScript's `for` loop**: This method uses a traditional `for` loop to iterate over an array, incrementing a counter variable (`i`) that represents the current index. **Pros and Cons** * **jQuery's `$.each`**: + Pros: concise and readable code, eliminates manual indexing issues. + Cons: might introduce additional overhead due to function call overhead and memory allocation for the callback function. * **Native JavaScript's `for` loop**: + Pros: generally faster and more lightweight, as it avoids the overhead of a function call and memory allocation. + Cons: requires manual indexing and can lead to bugs if not implemented correctly. **Library used** The test uses jQuery, which is a popular JavaScript library for simplifying DOM manipulation and event handling. In this case, it's used for its `$.each` method, which provides an easy way to iterate over arrays without manual indexing. **Special JS feature/syntax** There isn't any special or experimental JavaScript syntax being used in this benchmark. The code is standard JavaScript, using only the built-in `Array` and `for` loop constructs. **Other alternatives** If you wanted to test other iteration methods, some alternatives could include: * Using `forEach()` instead of `$.each` * Implementing a custom iterator function * Using Web Workers or parallel processing techniques * Testing other libraries like Lodash or Ramda Keep in mind that these alternatives might not be directly comparable to the native JavaScript `for` loop and jQuery's `$.each`, as they may introduce additional overhead or complexity. I hope this explanation helps! Let me know if you have any further questions.
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