Benchmark: innerhtml vs removechild

HTML Preparation code:

<select id="container"></select>

Script Preparation code:

var node = document.getElementById('container');

for(var i = 0; i < 3; i++) {
  var option = document.createElement('option');
  option.value = "Some text"
  node.appendChild(option);
}

Tests:

innerHTML
var node = document.getElementById('container'); node.innerHTML = '';
removeChild
var node = document.getElementById('container'); while(node.firstChild) node.removeChild(node.firstChild)

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.

The provided JSON represents a benchmark test case for measuring the performance difference between two approaches: setting the `innerHTML` property of an HTML element versus removing all child nodes using the `removeChild` method.

**Benchmark Definition**

In this test, the script preparation code creates a container select element and appends three options to it. The HTML preparation code only defines the container select element.

**Options Compared**

The two options being compared are:

1. **innerHTML**: Setting the `innerHTML` property of the container element.
2. **removeChild**: Removing all child nodes from the container element using a while loop that iterates over each node and removes it.

**Pros and Cons**

* **innerHTML**:
	+ Pros: Easy to implement, fast execution time (since it only sets the value).
	+ Cons: Can be slow if the innerHTML is very large or complex, as it involves creating new DOM nodes.
* **removeChild**:
	+ Pros: Fast execution time, especially for larger innerHTML values, since it only removes child nodes without creating new ones.
	+ Cons: Requires an additional loop to iterate over each node and remove it, which can be slower than setting the innerHTML directly.

**Library Usage**

In this test, no external libraries are used.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The focus is solely on comparing the performance of two different DOM manipulation approaches.

**Other Alternatives**

Other alternatives to these two approaches could include:

* Using a library like jQuery's `html()` method, which can be faster than setting innerHTML directly.
* Using a library like React or Angular's virtual DOM, which can optimize DOM updates and reduce unnecessary reflows.
* Implementing a custom DOM manipulation function using Web Workers or other parallel processing techniques.

It's worth noting that the performance difference between these two approaches may depend on various factors, such as the specific use case, the size and complexity of the innerHTML value, and the target browser or platform.

Related benchmarks:

innerhtml vs removechild (version: 0)

Comparing performance of: innerHTML vs removeChild

Created: 8 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):