Benchmark: using getAttribute vs innerHtml

HTML Preparation code:

hi
<a id="yes" href="/okay">go here!!!! jkkjkkjjj don't</a>

Tests:

getAttribute
const element = document.getElementById('yes'); let i = 1000; while (i--) { // here let attr = element.getAttribute('id'); console.log(attr); }
innerHtml
const element = document.getElementById('yes'); let i = 1000; while (i--) { // here 2 let attr = element.innerHTML.trim(); console.log(attr); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getAttribute
innerHtml

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser/OS: Chrome 120 on Windows

View result in a separate tab

Test name	Executions per second
getAttribute	263.6 Ops/sec
innerHtml	223.1 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 its test cases.

**Benchmark Definition**

The benchmark is defined in JSON format, which represents a simple JavaScript microbenchmark that tests two approaches: `getAttribute` and `innerHtml`.

* The "Name" field provides a descriptive title for the benchmark.
* The "Description" field contains a brief summary of the benchmark's purpose, which is to compare the performance of getting an attribute using `getAttribute()` versus getting HTML content using `innerHTML`.
* The "Script Preparation Code" field is empty, indicating that no specific script needs to be executed before running the benchmark. This means that any dependencies or setup code are assumed to be handled elsewhere.
* The "Html Preparation Code" field provides a sample HTML string, which will be used as input for the benchmark.

**Individual Test Cases**

There are two test cases:

1. **Test Case 1: `getAttribute`**
	* The benchmark definition contains a JavaScript snippet that:
		+ Retrieves an element using `document.getElementById('yes')`.
		+ Initializes a variable `i` with a value of 1000.
		+ Enters a loop that runs `i--` times, and in each iteration:
			- Retrieves the attribute "id" from the element using `getAttribute()`.
			- Logs the result to the console.
	* The test case is identical for both `getAttribute()` and `innerHTML`, but with slightly different variable names (e.g., `attr` vs. `i`).
2. **Test Case 2: `innerHtml`**
	* This test case is identical to the first one, except that it uses `innerHTML.trim()` instead of `getAttribute()`.
	* The main difference lies in how the HTML content is accessed.

**Library Usage**

There are no libraries explicitly mentioned in this benchmark. However, if we look at the code snippets provided for each test case, we can assume that the `document` object and its methods (e.g., `getElementById()`, `getAttribute()`, `innerHTML`) are part of the JavaScript DOM API.

**JavaScript Features/Syntax**

There are no special JavaScript features or syntax explicitly mentioned in this benchmark. The code snippets used simple variable declarations, loops, and method calls, which are standard JavaScript constructs.

**Performance Considerations**

When running microbenchmarks like this one, several factors can influence performance:

* **DOM manipulation**: Accessing `innerHTML` can be slower than accessing attributes using `getAttribute()` because it involves parsing the HTML content and potentially modifying the DOM tree.
* **String trimming**: The use of `trim()` after accessing `innerHTML` might introduce additional overhead compared to not trimming the string at all.
* **Loop iterations**: The number of loop iterations (`i--`) can significantly impact performance, especially if it's high or if the code inside the loop is computationally expensive.

**Other Alternatives**

Some alternative approaches could be explored:

* Using other methods for attribute access, such as `getAttributeNS()` or custom getters.
* Comparing the performance of different string manipulation techniques, like concatenation vs. template literals.
* Investigating the impact of caching or memoization on attribute access performance.

Keep in mind that microbenchmarks are typically used to identify performance bottlenecks and optimize specific code paths, rather than being a comprehensive evaluation of JavaScript's capabilities.

Related benchmarks:

using getAttribute vs innerHtml (version: 0)

ok

Comparing performance of: getAttribute vs innerHtml

Created: 2 years ago by: Guest

Jump to the latest result

getAttribute

innerHtml

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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