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Two methods of adjusting placeholders and classes for required inputs and associated labels
(version: 2)
Comparing performance of:
Old style vs New style vs New v2
Created:
9 years ago
by:
Registered User
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HTML Preparation code:
<div class="form-item"> <label></label> <input type="text" class="required"/> </div> <div class="form-item"> <label></label> <input type="checkbox" class="required"/> </div> <div class="form-item"> <label></label> <input type="text"/> </div> <div class="form-item"> <label></label> <input type="checkbox"/> </div>
Tests:
Old style
$(':input') .prop('placeholder', '') .closest('.form-item') .find('label') .removeClass('cic_requiredstar') .end() .end() .filter('.required') .prop('placeholder', 'required') .closest('.form-item') .find('label') .addClass('cic_requiredstar') .end() .end() .end() .filter('[data-placeholder]') .prop('placeholder', function () { return $(this).data('placeholder'); }) .end();
New style
$(':input') .closest('.form-item') .find('label') .removeClass('cic_requiredstar') .end() .end() .filter('[type="text"]') .prop('placeholder', '') .filter('.required') .prop('placeholder', 'required') .end() .end() .filter('.required') .closest('.form-item') .find('label') .addClass('cic_requiredstar') .end() .end() .end();
New v2
var $inputs = $(':input'); $inputs .closest('.form-item') .find('label') .removeClass('cic_requiredstar'); $inputs.filter('[type="text"]') .prop('placeholder', '') .filter('.required') .prop('placeholder', 'required'); $inputs.filter('.required') .closest('.form-item') .find('label') .addClass('cic_requiredstar');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Old style
New style
New v2
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what is being tested. **Overview** The benchmark tests three different ways to adjust placeholders and classes for required inputs and associated labels in a web application. The goal is to determine which approach is most efficient and effective. **Options Compared** The three options compared are: 1. **Old style**: Uses `$((':input')\r\n.prop('placeholder', '')\r\n.closest('.form-item')\r\n .find('label')\r\n .removeClass('cic_requiredstar')\r\n .end()\r\n.end()`)`, which involves iterating through all input elements, finding the closest `.form-item` container, and removing the `cic_requiredstar` class from the associated label. 2. **New style**: Uses `$((':input')\r\n.closest('.form-item')\r\n .find('label')\r\n .removeClass('cic_requiredstar')`)`, which involves iterating through all input elements, finding the closest `.form-item` container, and removing the `cic_requiredstar` class from the associated label. 3. **New v2**: Uses a variable `$inputs = $(':input');` followed by the code in option 2. This approach creates a cached reference to all input elements, which can improve performance by avoiding the need for repeated DOM queries. **Pros and Cons** * **Old style**: + Pros: Simple and easy to understand. + Cons: Iterates through all input elements, which can be slow for large datasets. * **New style**: + Pros: Faster than option 1 since it only iterates through the closest `.form-item` containers. + Cons: Requires a specific DOM structure, which might not always be present. * **New v2**: + Pros: Caches the reference to all input elements, reducing the number of DOM queries. + Cons: Requires creating a variable and storing a cached reference, which can add overhead. **Other Considerations** The benchmark also compares the performance of each approach on different browsers (in this case, Chrome 54), devices (other than desktop), and operating systems (Linux). This allows for a more comprehensive understanding of the performance characteristics of each option in various scenarios. **Library Usage** None of the benchmark options use any specific libraries beyond jQuery (`$` is used as a shortcut). **Special JS Features or Syntax** The benchmark does not mention any special JavaScript features or syntax that would require additional explanation. **Alternatives** Other approaches to achieve similar functionality might include: * Using a CSS-only solution, where classes are added and removed directly in the HTML. * Utilizing a JavaScript library like jQuery UI or React to handle form element manipulation. * Implementing custom DOM mutation using `Element.prototype.dispatchEvent` or similar methods. Keep in mind that these alternatives would likely have different performance characteristics and might not be as efficient as the options being benchmarked.
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