Benchmark: jQuery: insertBefore vs append

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<div id='container'>
    <div id='reference'>
    </div>
</div>

Tests:

insertBefore
for(var i=0; i<100; i++){ var p = $(document.createElement("p")); p.insertBefore("#reference"); }
append
for(var i=0; i<100; i++){ var p = $(document.createElement("p")); $("#container").append(p); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
insertBefore
append

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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**Benchmark Overview**

The test compares two approaches to insert HTML elements into the DOM: `insertBefore` and `append`. The benchmark aims to determine which method is faster, in terms of executions per second, across different devices running Chrome 112 on Linux.

**Options Compared**

Two options are being compared:

1. **Insert Before (`insertBefore`)**: This approach inserts a new element before the specified reference element (`#reference`). It requires accessing and manipulating the parent node of the reference element.
2. **Append (`append`)**: This approach appends a new element to the end of the container element (`#container`). It involves adding an element to the DOM without specifying a position.

**Pros and Cons**

**Insert Before (`insertBefore`)**

Pros:

* More precise control over the insertion point
* Can be more efficient when inserting elements at specific positions in the DOM

Cons:

* Requires accessing and manipulating the parent node of the reference element, which can introduce additional overhead
* May not be as flexible as `append` for certain use cases (e.g., when adding multiple elements)

**Append (`append`)**

Pros:

* Simpler and more straightforward approach to inserting elements into the DOM
* Can be faster since it doesn't require manipulating parent nodes or specifying insertion points

Cons:

* Less control over the insertion point, which may lead to less predictable behavior in certain scenarios
* May not be suitable for situations where precise positioning is required

**Other Considerations**

The benchmark also takes into account the device platform (Desktop) and operating system (Linux). This suggests that the test aims to evaluate performance across different environments.

**Library and Features Used**

The benchmark uses jQuery, a popular JavaScript library, which provides an easy-to-use API for DOM manipulation. The `$(document.createElement("p"))` syntax is used to create a new element, and `$()` is the jQuery function that selects elements in the DOM.

There are no special JS features or syntaxes mentioned in this specific benchmark. However, if you're interested in exploring other approaches or optimizing these methods further, you can consider factors like:

* Using `insertAdjacentHTML` instead of `createElement` for faster HTML string manipulation
* Minimizing DOM traversals and reflows by using techniques like batch operations or precomputing data
* Leverage modern JavaScript features like Web Workers or async/await for improved performance and concurrency

**Alternatives**

Other alternatives to compare or optimize the insertion methods might include:

* Using a different library (e.g., vanilla JavaScript, React, Angular) instead of jQuery
* Experimenting with other DOM manipulation approaches, such as `insertBefore` vs. `appendChild`
* Investigating WebAssembly or native Web APIs for faster performance

Feel free to ask if you'd like more information on these alternatives!

Related benchmarks:

jQuery: insertBefore vs append (version: 0)

Comparing performance of: insertBefore vs append

Created: 2 years ago by: Guest

Jump to the latest result

insertBefore

append

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):