Benchmark: set name vs set id

Script Preparation code:

let Zoo = document.createElement("div"); 

for (let i=0;i<500;i++){
	let foo = document.createElement("div");                        
	Zoo.appendChild(foo);                 
}

Tests:

set name
let foo = document.getElementsByTagName("div"); for (let el of foo){ el.name = 'sampleName'; }
set id
let foo = document.getElementsByTagName("div"); for (let el of foo){ el.id = 'sampleName'; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
set name
set id

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/125.0.0.0 Safari/537.36

Browser/OS: Chrome 125 on Windows

View result in a separate tab

Test name	Executions per second
set name	2220944.0 Ops/sec
set id	1583705.8 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 definition and test cases.

**Benchmark Definition**

The benchmark definition is a JSON object that describes a JavaScript microbenchmark. In this case, it defines two different approaches:

1. `set name`: This approach uses the `name` property to set a string value for each element in the document.
2. `set id`: This approach uses the `id` property to set an integer value for each element in the document.

The benchmark script preparation code creates an HTML structure with 500 `div` elements, and then appends these elements to a container element named "Zoo". The HTML preparation code is empty in this case.

**Comparison of Options**

There are two approaches being compared:

1. **Using `name` property**: This approach sets a string value for each element using the `name` property. For example: `el.name = 'sampleName';`.
2. **Using `id` property**: This approach sets an integer value for each element using the `id` property. For example: `el.id = 'sampleName';`.

**Pros and Cons of Each Approach**

1. **Using `name` property**:
	* Pros: Easy to set a string value, no need to consider data types.
	* Cons: May lead to slower performance due to JavaScript's string manipulation.
2. **Using `id` property**:
	* Pros: Faster performance since it only requires integer comparison and assignment.
	* Cons: May require more complex setup, especially for larger datasets.

**Library Usage**

There is no library explicitly mentioned in the benchmark definition. However, the `getElementsByTagName()` function used in both test cases is a part of the DOM (Document Object Model) API, which is a built-in JavaScript API.

**Special JS Features or Syntax**

None are explicitly mentioned in this benchmark definition. However, it's worth noting that the use of `let` and template literals (`\r\n`) in the script preparation code may be considered modern JavaScript features.

**Other Alternatives**

There are other alternatives for setting property values on elements, such as:

1. **Using setter functions**: Instead of assigning a value directly, you can create a setter function that updates the element's properties.
2. **Using computed properties**: You can use getter and setter functions to compute values on demand.

For example:
```javascript
let foo = document.createElement("div");
foo._name = "sampleName";
function get_name() {
  return foo._name;
}
```
Keep in mind that these alternatives may have different performance characteristics and are not directly related to the `set name` vs `set id` comparison in this benchmark.

Related benchmarks:

set name vs set id (version: 0)

Comparing performance of: set name vs set id

Created: 2 years ago by: Registered User

Jump to the latest result

set name

set id

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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