Benchmark: json stringify vs array tostring2

Script Preparation code:

function moreData(n) {
  var arr = [];
  for (var i=0; i<n; i++) {
    arr.push({
      "key": Math.floor(Math.random() * 256), 
      "other": Math.floor(Math.random() * 512)
    });
  }
  return arr;
}
function makeTestData() { return moreData(10000); }

Tests:

toString
makeTestData().toString()
JSON.stringify
JSON.stringify(makeTestData());

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
toString
JSON.stringify

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested.

**Benchmark Overview**

The benchmark is comparing two JavaScript methods: `toString()` and `JSON.stringify()`. Both methods are used to convert data into a string representation, but they have different approaches and performance characteristics.

**Options Compared**

1. **`toString()`**: This method converts an object to a plain string representation. It does so by concatenating all the key-value pairs of the object using the `+` operator.
2. **`JSON.stringify()`**: This method converts an object into a JSON (JavaScript Object Notation) formatted string. It serializes the object's properties, including arrays and objects, in a way that can be easily parsed back into JavaScript.

**Pros and Cons**

1. **`toString()`**:
	* Pros: Lightweight, simple implementation.
	* Cons: Can be slow for large objects, as it involves concatenating many strings.
	* Considerations: This method is generally faster than `JSON.stringify()`, but may not work well with complex data structures or special characters.
2. **`JSON.stringify()`**:
	* Pros: Robust, efficient implementation that handles most data types correctly.
	* Cons: May be slower due to the overhead of serializing objects and arrays.
	* Considerations: This method is generally more accurate than `toString()`, but may not work well with circular references or special characters.

**Library Usage**

There is no library explicitly mentioned in the provided JSON. However, it's worth noting that both methods rely on internal JavaScript functionality to serialize data.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in this benchmark beyond what's necessary for the `toString()` and `JSON.stringify()` functions themselves.

**Other Alternatives**

If you needed to convert data into a string representation, other alternatives might include:

1. `XMLSerializer`: A built-in JavaScript API that can serialize objects to XML.
2. Third-party libraries like `json-stringify-safe` or `serializer`.
3. String concatenation with template literals (e.g., `${object}`) for simple cases.

Keep in mind that these alternatives may have their own trade-offs and performance characteristics, and might not be as efficient as the built-in methods used here.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Linux; Android 9; Mi A1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Mobile Safari/537.36

Browser/OS: Chrome Mobile 76 on Android

View result in a separate tab

Test name	Executions per second
toString	23.4 Ops/sec
JSON.stringify	21.6 Ops/sec

Related benchmarks:

json stringify vs array tostring2 (version: 0)

Comparing performance of: toString vs JSON.stringify

Created: 4 years ago by: Guest

Jump to the latest result

toString

JSON.stringify

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):