Benchmark: Test qwe qweqw - MeasureThat.net

Script Preparation code:

function makeid() {
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for (var i = 0; i < 5; i++)
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

window.parentObj = {};

for (let i = 0; i < 100; i++) {
	window.parentObj[makeid()] = new Array(makeid().length).fill(1);
}

Tests:

Test case 1
const newArr = []; Object.keys(window.parentObj).forEach((k, i) => { window.parentObj[k].forEach(value => newArr.push(value)) });
Test case 2
const newArr = []; Object.values(window.parentObj).forEach((values, i) => { values.forEach(value => newArr.push(value)) });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test case 1
Test case 2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36

Browser/OS: Chrome 91 on Windows

View result in a separate tab

Test name	Executions per second
Test case 1	38689.8 Ops/sec
Test case 2	55401.1 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 MeasureThat.net and understand what's being tested in this benchmark.

**Benchmark Definition:**
The provided JSON defines a JavaScript microbenchmark that creates an object `window.parentObj` with 100 properties, each initialized with an array of length equal to the property name. This creates a nested structure with many levels of objects and arrays.

**Script Preparation Code:**
This code generates random property names for the `window.parentObj` object by concatenating 5 random characters from the alphabet and numbers. It also initializes an empty string `text` which is used in the test cases.

**Html Preparation Code:**
There is no HTML preparation code provided, which means that the benchmark only runs on the JavaScript side.

**Individual Test Cases:**

1. **Test case 1:**
This test case uses the `Object.keys()` method to iterate over the properties of `window.parentObj`. It then iterates over each property value using another `forEach` loop and pushes it onto an empty array `newArr`.
2. **Test case 2:**
This test case is similar to Test case 1, but it uses `Object.values()` instead of `Object.keys()`. This method returns a new array containing the values of all enumerable own properties in the given object.

**Options Compared:**

In this benchmark, two options are being compared:

* Using `Object.keys()` versus using `Object.values()` to iterate over the properties of an object.
* The pros and cons of these approaches are as follows:
	+ **Using `Object.keys()`**: This method is generally faster because it returns a sorted array of property names. However, it may be slower in some cases where the number of properties is very large.
	+ **Using `Object.values()`**: This method is often faster for modern browsers because it returns an array of values directly, rather than iterating over each property name and then accessing its value.

**Pros and Cons:**

* Using `Object.keys()` can be beneficial when:
	+ You need to iterate over the properties in a specific order (e.g., alphabetically).
	+ You want to avoid the overhead of creating an array.
* Using `Object.values()` can be beneficial when:
	+ You need to iterate over the values directly without accessing their corresponding property names.
	+ You're working with large datasets where iterating over each property name would be slower.

**Other Considerations:**

* The benchmark assumes that the browser supports modern JavaScript features, such as `Object.values()`.
* The test cases don't account for edge cases like null or undefined values in the object.
* There are no parallel execution options available in this benchmark.

**Library and Purpose:**
There is no library being used in this benchmark. MeasureThat.net provides a simple framework for running JavaScript microbenchmarks, allowing users to compare different implementations of common tasks.

If you have any further questions or would like more information on how to create your own benchmarks using MeasureThat.net, feel free to ask!

Related benchmarks:

Test qwe qweqw (version: 0)

Test

Comparing performance of: Test case 1 vs Test case 2

Created: 3 years ago by: Guest

Jump to the latest result

Test case 1

Test case 2

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):