Benchmark: innerhtml vs removechild

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

var node = document.getElementById('container');

for(var i = 0; i < 1000; i++) node.appendChild(document.createElement('div'));

Tests:

innerHTML
var node = document.getElementById('container'); node.innerHTML = '<img />';
removeChild
var node = document.getElementById('container'); var img = new Image() while(node.firstChild) node.removeChild(node.firstChild) node.appendChild( img )

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
innerHTML
removeChild

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this specific benchmark.

**Benchmark Overview**

The benchmark compares two approaches: setting the `innerHTML` property directly to an HTML string, and removing all child nodes from the element using `removeChild` method, followed by appending a new child node (an image). The goal is to determine which approach is faster.

**Options Compared**

Two options are compared:

1. **innerHTML**: Directly setting the `innerHTML` property to an HTML string.
2. **removeChild**: Removing all child nodes from the element and then appending a new child node.

**Pros and Cons of Each Approach**

**innerHTML**

Pros:

* Simpler and more straightforward approach
* Fewer operations, which can result in faster execution

Cons:

* Requires creating a temporary DOM node to prevent modifications to the original node (although this is not explicitly shown in the benchmark code)
* May involve additional memory allocation for the temporary node

**removeChild**

Pros:

* Can be optimized for performance by removing child nodes without modifying the original node
* Allows for more control over the DOM structure

Cons:

* Requires more operations (removing and re-appending) than setting `innerHTML`
* May incur additional overhead due to the creation of a temporary image object

**Library and Purpose**

The benchmark uses the JavaScript `document` object, which is part of the Document Object Model (DOM). The `document.getElementById` method retrieves an element by its ID, and the `appendChild` method adds a child node to the end of the element's children list.

The `removeChild` method removes the first child node from the specified node. In this benchmark, it's used to remove all child nodes before appending a new image.

**Special JS Feature or Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The code uses standard JavaScript syntax and DOM methods.

**Other Alternatives**

For alternative approaches, here are a few examples:

* **template literals**: Instead of using `innerHTML`, you could use template literals to concatenate the HTML string and then set it on the element.
* **DOM fragments**: You could use DOM fragments (a new API introduced in ECMAScript 2019) to create a temporary fragment that can be appended to the original node, potentially reducing overhead.
* **Virtual DOM**: Another approach would be to use a virtual DOM library to manage the update of the actual DOM structure, which can provide optimized rendering and updating performance.

Keep in mind that these alternatives might not directly compare to the `innerHTML` vs `removeChild` approach tested on MeasureThat.net.

Related benchmarks:

innerhtml vs removechild (version: 0)

Comparing performance of: innerHTML vs removeChild

Created: 9 years ago by: Guest

Jump to the latest result

innerHTML

removeChild

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):