Benchmark: test dwqdwqdwq - MeasureThat.net

HTML Preparation code:

<div id="test" style="background-color: red; color: blue; position: fixed; top: 0; left: 0;"></div>

Tests:

testa
var el = document.getElementById('test'); el.style.backgroundColor = 'orange'; el.style.color = 'brown'; el.style.fontSize = '4em'; el.style.backgroundPosition = 'center'; el.style.backgroundSize = 'cover'; el.style.fontWeight = '400'; el.style.width = '30px'; el.style.height = '20px'; el.style.transform = 'none';
testdwqdwq
var el = document.getElementById('test'); Object.assign(el.style, { backgroundColor: 'orange', color: 'brown', fontSize: '4em', backgroundPosition: 'center', backgroundSize: 'cover', fontWeight: '400', width: '30px', height: '20px', transform: 'none' });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
testa
testdwqdwq

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/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Windows

View result in a separate tab

Test name	Executions per second
testa	296216.2 Ops/sec
testdwqdwq	320350.6 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested, compared options, pros and cons, library usage, special JavaScript features, and other considerations.

**Benchmark Test Cases**

The test cases are defining how to update the styles of an HTML element using two different approaches:

1. **Direct Property Assignment**: The first test case uses direct property assignment to set the style properties individually:
```javascript
var el = document.getElementById('test');
el.style.backgroundColor = 'orange';
el.style.color = 'brown';
// ...
```
2. **Object Assign** : The second test case uses Object.assign() to assign a single object containing all the style properties at once:
```javascript
var el = document.getElementById('test');
Object.assign(el.style, {
  backgroundColor: 'orange',
  color: 'brown',
  fontSize: '4em',
  // ...
});
```
**Comparison of Options**

* **Direct Property Assignment**: This approach can be slower because it involves multiple calls to `el.style` and setting each property individually. However, it's also more explicit and easier to read.
* **Object Assign**: This approach is generally faster because it reduces the number of calls to `el.style`. However, it can be less readable if not done correctly.

**Pros and Cons**

* Direct Property Assignment:
	+ Pros: Easier to read, more explicit.
	+ Cons: Can be slower due to multiple calls to `el.style`.
* Object Assign:
	+ Pros: Faster, reduces number of calls to `el.style`.
	+ Cons: Less readable if not done correctly.

**Library Usage**

There is no library usage in the provided benchmark. The test cases only use built-in JavaScript features.

**Special JavaScript Features**

The benchmark uses some special JavaScript features:

* **Object.assign()**: This method was introduced in ECMAScript 5 (2011) and allows for assigning properties from an object to another object.
* **Template Literals** (`\r\n`): These are used to define multi-line strings.

**Other Considerations**

* The benchmark is running on a fixed HTML element with a specific style. This ensures that the test cases only have to worry about updating the styles, not creating or manipulating new elements.
* The benchmark is using `document.getElementById()` to retrieve the element, which assumes that there is only one element with the specified ID.

**Alternatives**

If you wanted to rewrite these tests, you could use other approaches such as:

* Using a library like jQuery to simplify DOM manipulation
* Creating a separate function or class to encapsulate style updates
* Using a different approach for updating styles, such as using CSS transforms

However, the provided test cases are already quite concise and straightforward, so an alternative implementation might not offer significant benefits.

Related benchmarks:

test dwqdwqdwq (version: 0)

Comparing performance of: testa vs testdwqdwq

Created: 8 years ago by: Guest

Jump to the latest result

testa

testdwqdwq

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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