Benchmark: set styles comparison

HTML Preparation code:

<div id="test"></div>

Script Preparation code:

el = document.getElementById("test");
props = {
  height: '1vh',
  width: '1vw',
  color: 'red',
  border: '1vmin solid red',
  'background-color': 'black',
  padding: '0.5vmin'
};

Tests:

1
let i = 0; while (i < 10000) { let css = ''; for (const k in props) { css += `${k}:${props[k]};`; } el.setAttribute('style', css); i++; }
2
let i = 0; while (i < 10000) { el.setAttribute('style', Object.entries(props).map(x => x[0] + ':' + x[1] + ';').join('')); i++; }
3
let i = 0; while (i < 10000) { let css = ''; let ents = Object.entries(props); for (let ii = 0; ii < ents.length; ii++) { css += `${ents[ii][0]}:${ents[ii][1]};`; } el.setAttribute('style', css); i++; }
setAttribute
let i = 0; while (i < 10000) { el.setAttribute('style',"color:red;border:1vmin solid red;padding:0.5vmin;background-color:black;height:1vh;width:1vw;"); i++; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2
3
setAttribute

Fastest: N/A

Slowest: N/A

Latest 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 JavaScript microbenchmarking test case for comparing the performance of different approaches to set CSS styles on an HTML element.

**Benchmark Definition:**

The benchmark is defined in two parts:

1. **Script Preparation Code**: This code snippet creates a JavaScript object `props` that contains various CSS style properties (e.g., height, width, color, border, background-color, padding) and assigns it to a variable `el`. The variable `el` represents an HTML element with the ID "test", which is created using the HTML Preparation Code.
2. **Html Preparation Code**: This code snippet creates a basic HTML structure with a `<div>` element having the ID "test".

**Individual Test Cases:**

The benchmark consists of four test cases, each defined in a separate JSON object:

1. **Test Case 1 ("1")**: This test case uses a traditional `for...in` loop to iterate over the `props` object and construct the CSS style string.
2. **Test Case 2 ("2")**: This test case uses the `Object.entries()` method to get an array of key-value pairs from the `props` object, maps each pair to a string in the format "key:value", and joins them together using the `join()` method.
3. **Test Case 3 ("3")**: This test case is similar to Test Case 2, but uses a separate variable `ents` to store the result of `Object.entries(props)`.
4. **Test Case 4 ("setAttribute")**: This test case uses the `el.setAttribute()` method directly to set the CSS style string.

**Options Compared:**

The benchmark compares the performance of four different approaches:

1. Traditional `for...in` loop
2. `Object.entries()` and `join()`
3. Separate variable to store result of `Object.entries(props)`
4. Direct use of `el.setAttribute()` method

**Pros and Cons:**

Here are some pros and cons for each approach:

* **Traditional `for...in` loop**: Simple and straightforward, but may be slower due to the overhead of iterating over the object's properties.
* **`Object.entries()` and `join()`:** Fast and efficient, as it uses a native method to get an array of key-value pairs. However, may require additional memory allocation.
* **Separate variable to store result of `Object.entries(props)`:** Similar to the previous approach, but with an extra step that might add overhead.
* **Direct use of `el.setAttribute()` method**: Simple and efficient, as it avoids the need for string manipulation.

**Library Used:**

None. This benchmark does not rely on any external libraries or frameworks.

**Special JS Feature/Syntax:**

The benchmark uses some JavaScript features and syntax, such as:

* Template literals (`${k}:${props[k]};`)
* `Object.entries()`
* `join()`

These are standard JavaScript features and do not require special knowledge to understand.

Related benchmarks:

set styles comparison (version: 0)

Comparing performance of: 1 vs 2 vs 3 vs setAttribute

Created: 3 years ago by: Registered User

Jump to the latest result

1

2

3

setAttribute

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):