Benchmark: args stringify vs join vs toString

Script Preparation code:

var arr = ['123', undefined, false, 'abc', 'flex', 'flex-row', 'items-center justify-center', undefined, undefined, false];

Tests:

stringify
JSON.stringify(arr)
join
arr.filter(Boolean).join(' ')
toString
arr.toString()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
stringify
join
toString

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser/OS: Chrome 125 on Mac OS X 10.15.7

View result in a separate tab

toString

2.9M/s

stringify

2.2M/s

join

2.0M/s

View exact numbers

Test name	Executions per second
✓ toString	2,884,138 Ops/sec
stringify	2,178,574 Ops/sec
join	1,984,808 Ops/sec

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmarking test case on MeasureThat.net. The benchmark compares the performance of three different approaches to convert an array into a string: `JSON.stringify()`, `Array.prototype.join()` with `Boolean` filtering, and `toString()`.

**Approaches Compared**

1. **JSON.stringify()**: This method serializes the entire array object into a JSON string. It's useful for converting complex objects into a compact representation.
2. **Array.prototype.join()` with `Boolean` filtering: This approach uses the `join()` method to concatenate the elements of the array into a single string, separated by spaces. The `Boolean` filtering ensures that only truthy values are included in the resulting string.
3. **toString()**: This method returns a string representation of the entire array object.

**Pros and Cons of Each Approach**

1. **JSON.stringify()**:
	* Pros: Compact representation, works well with complex objects.
	* Cons: May not be suitable for arrays with mixed data types or large amounts of whitespace.
	* Performance: Can be slower due to the overhead of serializing the entire object.
2. **Array.prototype.join()` with `Boolean` filtering**:
	* Pros: Efficient use of memory, suitable for arrays with a mix of truthy and falsy values.
	* Cons: May not work as expected if there are many whitespace characters or null/undefined values in the array.
	* Performance: Generally faster than JSON.stringify(), especially for large arrays.
3. **toString()**:
	* Pros: Simple and straightforward, works well with most data types.
	* Cons: May result in a larger string representation due to the inclusion of unnecessary whitespace characters.
	* Performance: Typically slower than `join()` with filtering.

**Library Usage**

None of the benchmarked methods rely on any external libraries. However, `JSON.stringify()` uses the built-in `JSON` object and serialization algorithm.

**Special JS Features/Syntax**

None mentioned in this specific test case.

**Alternative Approaches**

If you need to convert an array into a string and require more control over the output or performance, consider the following alternatives:

* Using a library like [json-stringify-safe](https://www.npmjs.com/package/json-stringify-safe) for more robust JSON serialization.
* Implementing a custom conversion function that takes into account specific requirements, such as removing whitespace characters or handling non-ASCII characters.
* Utilizing `Array.prototype.map()` and `String.prototype.join()` to create a string representation of the array elements.

Keep in mind that these alternatives may require additional code and consideration to ensure optimal performance and compatibility with various browsers.

args stringify vs join vs toString (version: 0)

Comparing performance of: `stringify vs join vs toString`

Created: 2 years ago by: Guest

Go to the latest result

stringify

join

toString

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

args stringify vs join vs toString (version: 0)

Comparing performance of: stringify vs join vs toString

Created: 2 years ago by: Guest

Go to the latest result

stringify

join

toString

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `stringify vs join vs toString`