Benchmark: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElementasd

Script Preparation code:

 box1 = document.createElement("div");

 box2 = document.createElement("div");

Tests:

1) innerHTML +=
box1.innerHTML += "<div></div>";
2) insertAdjacentHTML
box1.insertAdjacentHTML('beforeend', "<div></div>");
3) appendChild
box1.appendChild(box2);
4) insertAdjacentElement
box1.insertAdjacentElement('beforeend', box2);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1) innerHTML +=
2) insertAdjacentHTML
3) appendChild
4) insertAdjacentElement

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is comparing the performance of four different methods to insert content into an HTML element:

1. `innerHTML`
2. `insertAdjacentHTML`
3. `appendChild`
4. `insertAdjacentElement`

These methods are used to add new elements or text to an existing DOM (Document Object Model) structure.

**Library and Special JavaScript Features**

There is no specific library being used in this benchmark, but it does utilize some advanced JavaScript features:

* `insertAdjacentHTML` is a method introduced in HTML5 that allows inserting HTML content into an element.
* `insertAdjacentElement` is another method introduced in HTML5 that allows inserting a child element into the DOM.
* The use of template literals (`innerHTML += "..."`) and string concatenation (`"innerHTML +="`) is not specific to any library, but rather a JavaScript syntax feature.

**Options Compared**

The four methods being compared are:

1. **`innerHTML`**: This method replaces the contents of an element with new content.
2. **`insertAdjacentHTML`**: This method inserts new HTML content into an element at a specified position (beforebegin, beforeend, afterbegin, or afterend).
3. **`appendChild`**: This method adds a child node to the end of an element's childNodes list.
4. **`insertAdjacentElement`**: This method inserts a child element at a specified position (beforebegin, beforeend, afterbegin, or afterend).

**Pros and Cons**

Here are some pros and cons of each method:

1. **`innerHTML`**:
	* Pros: Simple to use, works well for small amounts of content.
	* Cons: Can be slow, especially if the content is large or complex; can lead to security issues if not properly sanitized.
2. **`insertAdjacentHTML`**:
	* Pros: Fast and efficient, allows for more control over content insertion; supports HTML5 attributes.
	* Cons: Requires HTML5 support, may require additional setup for certain browsers.
3. **`appendChild`**:
	* Pros: Low overhead, works well for small amounts of content; can be used with other DOM methods to create complex structures.
	* Cons: Can be slower than `insertAdjacentHTML`, requires creating a new element or node.
4. **`insertAdjacentElement`**:
	* Pros: Similar benefits to `insertAdjacentHTML`, but allows inserting child elements instead of HTML content.
	* Cons: Requires HTML5 support, may require additional setup for certain browsers.

**Considerations**

When choosing between these methods, consider the following factors:

* Performance: If you need fast and efficient content insertion, consider using `insertAdjacentHTML` or `insertAdjacentElement`.
* Security: Be cautious when using `innerHTML`, as it can lead to security issues if not properly sanitized.
* Complexity: For more complex structures, consider using a combination of DOM methods, such as `appendChild` and `insertAdjacentElement`.

**Alternatives**

If you're looking for alternative approaches, consider the following:

* **DOM manipulation libraries**: There are several libraries available that provide faster and more efficient DOM manipulation, such as jQuery or React.
* **Template engines**: Some frameworks use template engines to render content, which can be faster and more efficient than traditional DOM manipulation methods.
* **Server-side rendering**: If you're building a server-side rendered application, consider using a library like Next.js or Nuxt.js, which provide fast and efficient rendering capabilities.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Windows

View result in a separate tab

Test name	Executions per second
1) innerHTML +=	346.2 Ops/sec
2) insertAdjacentHTML	242928.3 Ops/sec
3) appendChild	1144863.1 Ops/sec
4) insertAdjacentElement	1127055.8 Ops/sec

Related benchmarks:

innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElementasd (version: 0)

innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement

Comparing performance of: 1) innerHTML += vs 2) insertAdjacentHTML vs 3) appendChild vs 4) insertAdjacentElement

Created: one year ago by: Guest

Jump to the latest result

1) innerHTML +=

2) insertAdjacentHTML

3) appendChild

4) insertAdjacentElement

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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