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Test remove node performance
(version: 0)
Comparing performance of:
textContent vs removeChild
Created:
2 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<div id='test'></div>
Script Preparation code:
var el = document.getElementById('test'); for (let i = 0; i < 1000; ++i) el.appendChild(document.createElement('div'));
Tests:
textContent
let node = document.getElementById('test'); node.textContent = '';
removeChild
let node = document.getElementById('test'); while(node.firstChild) { node.removeChild(node.firstChild); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
textContent
removeChild
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares two methods for removing all child nodes from a pre-existing HTML element: **Method 1: `textContent`:** This method sets the `textContent` property of the node to an empty string, effectively clearing all its child content. **Method 2: `removeChild` Loop:** This method iterates through each child node of the element and removes it individually using the `removeChild` method. **Pros and Cons:** * **`textContent`:** * **Pros:** Simpler syntax, potentially faster as it directly manipulates the content rather than removing individual nodes. * **Cons:** May not be suitable if you need to preserve node properties or references beyond just their content. It effectively replaces all child nodes with nothing, potentially causing issues if other scripts rely on those nodes. * **`removeChild` Loop:** * **Pros:** More explicit and granular control over node removal. Allows for potential optimizations or custom handling during removal. * **Cons:** Potentially slower due to the looping operation and multiple calls to `removeChild`. More verbose syntax. **Other Considerations:** * **Performance:** The benchmark results demonstrate that in this specific scenario, the `removeChild` loop is slightly faster on average (though the difference isn't huge). This can vary depending on factors like browser, HTML structure, and node count. * **DOM Manipulation Best Practices:** In general, minimizing DOM manipulations for performance reasons is often good practice. However, choosing the right method depends on your specific needs and context. **Alternatives:** * If you only need to clear content and not remove nodes: You could use a `textContent` approach with an empty string or `null`. * For more complex scenarios involving node replacement or restructuring, libraries like jQuery or React provide higher-level methods that abstract away some of the DOM manipulation complexity.
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removeChild vs children.remove
Removal of DOM Element's Children (removeChild vs remove vs innerHTML vs textContent)
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removefirst vs removelast
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