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 = '';
removeChild
var node = document.getElementById('container'); while(node.firstChild) node.removeChild(node.firstChild)
create range
var node = document.getElementById('container'); var r = document.createRange(); r.selectNodeContents(node); r.deleteContents();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
innerHTML
removeChild
create range

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 break down the provided JSON and explain what's being tested, the different approaches compared, their pros and cons, and other considerations.

**Benchmark Definition**

The benchmark defines two scripts that are to be executed:

1. `innerHTML`: This script sets the inner HTML of an element (`var node = document.getElementById('container');\nnode.innerHTML = '';`).
2. `removeChild`: This script removes all child nodes from an element (`var node = document.getElementById('container');\nwhile(node.firstChild) node.removeChild(node.firstChild)`).
3. `create range`: This script creates a Range object, selects its contents, and then deletes them (`var node = document.getElementById('container');\nvar r = document.createRange();\nr.selectNodeContents(node);\nr.deleteContents()`).

**Options Compared**

The benchmark compares the execution time of these three scripts on different nodes:

* `innerHTML`: Sets the inner HTML of an element.
* `removeChild`: Removes all child nodes from an element.
* `create range`: Creates a Range object, selects its contents, and then deletes them.

**Pros and Cons**

1. **innerHTML**: This approach is simple and fast but can be inefficient if the element has a lot of content, as it creates multiple text nodes and other DOM elements.
2. **removeChild**: This approach is more efficient than `innerHTML` because it only removes one node at a time, which can reduce memory usage and garbage collection. However, it's slower for large numbers of child nodes.
3. **create range**: This approach is useful when you need to manipulate the contents of an element without modifying its structure, but it requires more memory allocation and can be slower than `removeChild` due to the creation of a Range object.

**Library Usage**

The benchmark uses the following libraries:

* None (no external libraries are used)

**Special JS Features or Syntax**

None mentioned

**Other Considerations**

The benchmark also considers the device platform, operating system, and browser version, which can affect execution time. The `ExecutionsPerSecond` value represents the number of executions per second.

**Alternatives**

If you were to rewrite this benchmark, you might consider adding additional test cases, such as:

* Using different HTML elements (e.g., `div`, `span`, `p`)
* Adding more child nodes or complex content
* Using other methods for manipulating DOM nodes (e.g., `addEventListener`, `innerHTML +=`, etc.)
* Testing on different browsers or devices

Additionally, you could consider using a benchmarking library like WebPageTest or Benchmark.js to create and run benchmarks.

Related benchmarks:

innerhtml vs removechild (version: 0)

Comparing performance of: innerHTML vs removeChild vs create range

Created: 8 years ago by: Guest

Jump to the latest result

innerHTML

removeChild

create range

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):