Benchmark: td removal best way

HTML Preparation code:

<table id="table"></table>

Script Preparation code:

for (let i = 0; i < 50; i++) {
    let tr = document.createElement("TR");
    for (let j = 0; j < 300; j++) {
        tr.appendChild(document.createElement("TD"))
    }
    document.querySelector("table").appendChild(tr);
}

Tests:

using textContent
var nodeTr = document.querySelectorAll('#table tr'); for(let i=0;i<nodeTr.length;i++){ nodeTr[i].textContent=""; }
using removeChild
var nodeTr = document.querySelectorAll('#table tr'); for(let i=0;i<nodeTr.length;i++){ while(nodeTr[i].firstChild) {nodeTr[i].removeChild(nodeTr[i].firstChild)} }
using remove
var nodeTr = document.querySelectorAll('#table tr'); for(let i=0;i<nodeTr.length;i++){ while(nodeTr[i].firstChild) {nodeTr[i].firstChild.remove()} }
using innerHtml
var nodeTr = document.querySelectorAll('#table tr'); for(let i=0;i<nodeTr.length;i++){ nodeTr[i].innerHTML=""; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
using textContent
using removeChild
using remove
using innerHtml

Fastest: N/A

Slowest: N/A

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/117.0.0.0 Safari/537.36

Browser/OS: Chrome 117 on Windows

View result in a separate tab

Test name	Executions per second
using textContent	21843.3 Ops/sec
using removeChild	85724.4 Ops/sec
using remove	85962.2 Ops/sec
using innerHtml	2672.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**Benchmark Definition:**
The provided JSON represents a benchmark test case for removing table rows (tr) from an HTML table using different methods. The script preparation code creates 50 table rows with 300 TD elements each and appends them to an existing table in the HTML page.

**Options Compared:**

1. **textContent**: Sets the text content of each tr element to an empty string.
2. **removeChild**: Removes the first child node from each tr element using the removeChild() method.
3. **remove**: Removes each tr element from its parent node using the remove() method.
4. **innerHTML**: Sets the inner HTML of each tr element to an empty string.

**Pros and Cons:**

* **textContent**: This approach is simple and efficient, as it only requires setting the text content of each element. However, it may not be suitable for all use cases, as it doesn't remove any child nodes.
* **removeChild**: This approach is more comprehensive than setTextContent(), as it removes the first child node from each tr element. However, it can be slower due to the overhead of recursively searching for child nodes and removing them.
* **remove**: While this approach provides a simple way to remove elements, it may not be suitable for all use cases, as it doesn't preserve any child nodes or attributes.
* **innerHTML**: This approach is likely the slowest, as it sets the entire HTML content of each element to an empty string, which can lead to unnecessary parsing and rendering.

**Library and Purpose:**
The provided benchmark test case uses no external libraries. However, it's worth noting that some JavaScript engines may use internal optimizations or caching that could affect the performance of these operations.

**Special JS Features:**
There are no special JS features or syntax mentioned in this benchmark test case. The code only uses standard JavaScript language features and DOM methods.

**Other Alternatives:**
If you're interested in exploring alternative approaches, here are a few options:

* Using **Array.prototype.forEach()**: Instead of using a traditional for loop, you could use the Array.prototype.forEach() method to iterate over the tr elements.
* Using **DocumentFragment**: You could create a DocumentFragment and append all the child nodes from each tr element to it, then remove the fragment to delete the elements.
* Using **MutationObserver**: You could use a MutationObserver to watch for changes in the DOM and only update the tr elements when necessary.

Keep in mind that these alternatives may have different performance characteristics or trade-offs, so it's essential to benchmark them against each other to determine which approach is best suited for your specific use case.

Related benchmarks:

td removal best way (version: 0)

Comparing performance of: using textContent vs using removeChild vs using remove vs using innerHtml

Created: one year ago by: Registered User

Jump to the latest result

using textContent

using removeChild

using remove

using innerHtml

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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