Benchmark: Array.every vs JSON.stringify

Script Preparation code:

window.foo = ['cat', 'dog', 'bird'];
window.bar = ['cat', 'dog', 'bird'];

Tests:

JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);
Array.every
window.foo.every((item, index) => item === window.bar[index])

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Array.every

3.9M/s

JSON.stringify

2.5M/s

Fastest: Array.every (1.5x faster)

View exact numbers

✓ Array.every: 3,880,132 ops/sec
• JSON.stringify: 2,507,224 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.stringify
Array.every

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Linux

View result in a separate tab

Array.every

68.3M/s

JSON.stringify

2.5M/s

View exact numbers

Test name	Executions per second
✓ Array.every	68,323,336 Ops/sec
JSON.stringify	2,495,570 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.

**Overview**

The benchmark compares two approaches for checking if arrays `window.foo` and `window.bar` are equal: using `JSON.stringify` and `Array.every`. The goal is to determine which approach is faster.

**What is being tested?**

The benchmark tests the performance of these two approaches in terms of execution speed (measured in executions per second). Specifically, it measures how many times each approach can be executed within a certain time frame.

**Options compared**

There are two options being compared:

1. **JSON.stringify**: This method converts an object or array to a JSON string, which can then be compared for equality.
2. **Array.every**: This method returns `true` if all elements in the array pass the provided test (in this case, comparing each element to the corresponding element in another array).

**Pros and Cons**

Here are some pros and cons of each approach:

1. **JSON.stringify**:
	* Pros: Simple and straightforward. It's easy to understand and implement.
	* Cons: It may not be the most efficient approach, especially for large arrays or objects, since it converts the data to a string first.
2. **Array.every**:
	* Pros: Efficient for small arrays or objects since it only needs to iterate through each element once.
	* Cons: May be slower for larger datasets due to the overhead of iterating over all elements.

**Library usage**

There is no explicit library usage in this benchmark, but `JSON.stringify` relies on the built-in JavaScript function with that name. There are no custom libraries or frameworks being used here.

**Special JS features or syntax**

There are no special JavaScript features or syntax being used in this benchmark.

**Other alternatives**

If you're looking for alternative approaches, consider the following:

1. **Array.prototype.every()**: Similar to Array.every(), but it's a method of the array prototype, making it even more concise.
2. **String.prototype.every()**: This can be used on arrays of strings, but it may not be as efficient as using Array.every().
3. **Set-based comparison**: If you're working with sets (not directly applicable here), you could use `Set` objects to compare elements. However, this approach isn't directly applicable to the provided benchmark.

In summary, the benchmark compares two approaches for checking array equality: using `JSON.stringify` and `Array.every`. While both have their pros and cons, `Array.every` is likely to be faster due to its more direct access to the array's elements.

Array.every vs JSON.stringify (version: 0)

Comparing performance of: `JSON.stringify vs Array.every`

Created: 6 years ago by: Registered User

Go to the latest result

JSON.stringify

Array.every

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Array.every vs JSON.stringify (version: 0)

Comparing performance of: JSON.stringify vs Array.every

Created: 6 years ago by: Registered User

Go to the latest result

JSON.stringify

Array.every

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Comparing performance of: `JSON.stringify vs Array.every`