Benchmark: Check If Object Empty 2

Script Preparation code:

var data = {};

function checkEmpty(obj) {
  for (const key in obj) {
    return false
  }

  return true;
}

Tests:

Object.keys
Object.keys(data).length === 0
Loop
checkEmpty(data)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.keys
Loop

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; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Browser/OS: Chrome 102 on Windows

View result in a separate tab

Test name	Executions per second
Object.keys	2738316.5 Ops/sec
Loop	4043996.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared options, pros and cons, and other considerations.

**Benchmark Overview**

The provided benchmark measures the performance of JavaScript code in different scenarios, specifically:

1. **Check If Object Empty**: A function `checkEmpty` is defined to check if an object is empty by iterating over its keys.
2. **Object.keys**: The length of the array returned by `Object.keys()` is compared to 0.

**Benchmark Preparation Code**

The script preparation code defines a simple JavaScript object `data` and a function `checkEmpty`. The purpose of this function is to check if an object is empty by iterating over its keys and returning false as soon as it finds a key, or true if no keys are found.

**Html Preparation Code**

There's no HTML preparation code provided, which means the benchmark doesn't measure anything related to web development or rendering.

**Individual Test Cases**

The benchmark consists of two test cases:

1. **"Object.keys"`**: This test case measures the performance of the `Object.keys()` function by comparing its returned array length to 0.
2. **"Loop"`**: This test case measures the performance of the `checkEmpty` function, which checks if an object is empty.

**Options Compared**

The benchmark compares two options:

1. Using `Object.keys()` to check if an object is empty
2. Using a manual loop (`for...in` statement) to check if an object is empty

**Pros and Cons of Each Approach**

1. **Using `Object.keys()`**:
	* Pros:
		+ Concise and efficient way to get the keys of an object.
		+ Built-in function, so it's a standard JavaScript method.
	* Cons:
		+ May not be as accurate for very large objects or complex objects with non-numeric key values.
		+ Returns an array, which might incur additional overhead due to its size.
2. **Using a manual loop (`for...in` statement)**:
	* Pros:
		+ Can be more precise and flexible when handling edge cases or complex objects.
		+ Doesn't rely on the `Object.keys()` function, so it's not affected by potential issues with this method.
	* Cons:
		+ More verbose and less concise compared to `Object.keys()`.
		+ May incur additional overhead due to the loop itself.

**Other Considerations**

1. **Library Used**: The benchmark doesn't use any external libraries or frameworks, so it's a vanilla JavaScript implementation.
2. **Special JS Feature/Syntax**: There are no special JavaScript features or syntax used in this benchmark. It only relies on standard JavaScript constructs and methods.

**Alternatives**

If you want to create similar benchmarks or test other JavaScript scenarios, consider the following alternatives:

1. Use different JavaScript environments (e.g., Node.js, browser-based environments) to see how your code behaves under different conditions.
2. Experiment with different data structures (e.g., arrays, sets, maps) and operations to measure their performance.
3. Create benchmarks for other JavaScript methods or built-in functions (e.g., `Array.prototype.forEach()`, `String.prototype.includes()`).
4. Consider using benchmarking libraries like Benchmark.js, which provides a more comprehensive set of features and tools for creating accurate benchmarks.

I hope this explanation helps you understand the provided benchmark and its comparisons!

Related benchmarks:

Check If Object Empty 2 (version: 0)

Comparing performance of: Object.keys vs Loop

Created: one year ago by: Guest

Jump to the latest result

Object.keys

Loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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