Benchmark: JSON.parse vs JSON.stringify

Tests:

JSON.parse
const obj = { "squadName": "Super hero squad", "homeTown": "Metro City", "formed": 2016, "secretBase": "Super tower", "active": true, "members": [{ "name": "Molecule Man", "age": 29, "secretIdentity": "Dan Jukes", "powers": [ "Radiation resistance", "Turning tiny", "Radiation blast" ] }, { "name": "Madame Uppercut", "age": 39, "secretIdentity": "Jane Wilson", "powers": [ "Million tonne punch", "Damage resistance", "Superhuman reflexes" ] }, { "name": "Eternal Flame", "age": 1000000, "secretIdentity": "Unknown", "powers": [ "Immortality", "Heat Immunity", "Inferno", "Teleportation", "Interdimensional travel" ] } ] } const objStringified = JSON.stringify(obj) JSON.parse(objStringified)
JSON.stringify
const obj = { "squadName": "Super hero squad", "homeTown": "Metro City", "formed": 2016, "secretBase": "Super tower", "active": true, "members": [{ "name": "Molecule Man", "age": 29, "secretIdentity": "Dan Jukes", "powers": [ "Radiation resistance", "Turning tiny", "Radiation blast" ] }, { "name": "Madame Uppercut", "age": 39, "secretIdentity": "Jane Wilson", "powers": [ "Million tonne punch", "Damage resistance", "Superhuman reflexes" ] }, { "name": "Eternal Flame", "age": 1000000, "secretIdentity": "Unknown", "powers": [ "Immortality", "Heat Immunity", "Inferno", "Teleportation", "Interdimensional travel" ] } ] } const objStringified = JSON.stringify(obj) JSON.stringify(obj)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.parse
JSON.stringify

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Definition:**
The benchmark compares the performance of `JSON.parse()` and `JSON.stringify()` functions in JavaScript.

**What are we comparing?**

We're comparing two options:

1. **`JSON.parse()`**: This function parses a JSON string into a JavaScript object.
2. **`JSON.stringify()`**: This function converts a JavaScript object into a JSON string.

**Pros and Cons:**

* `JSON.parse()`: Pros:
	+ Faster, as it only needs to parse the JSON string, not serialize an entire object tree.
	+ More efficient when dealing with complex objects or large datasets.
* `JSON.stringify()`: Pros:
	+ Can be used to convert any JavaScript object into a JSON string, making it useful for serialization and deserialization.
	+ Can be faster for simple objects or small datasets.

However, the main con of `JSON.parse()` is that it can throw errors if the input string is malformed. On the other hand, `JSON.stringify()` returns a string representation of the object, which might not preserve certain properties (like functions, dates, or regex objects).

**Library/Module:**
There isn't a specific library or module being used in this benchmark. The comparison is purely between the two built-in JavaScript methods.

**Special JS Feature/Syntax:**
The benchmark doesn't use any special JavaScript features or syntax beyond standard JSON and JavaScript object syntax.

**Other Alternatives:**

If you need to serialize and deserialize objects, you might consider using a library like `lodash` or `serde-js`, which provide more advanced serialization and deserialization options. For simple cases, you could also use the `JSON.stringify()` method directly on your JavaScript object.

Keep in mind that performance differences between these two methods will be most noticeable when dealing with large datasets or complex objects.

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
JSON.parse	576469.2 Ops/sec
JSON.stringify	674530.1 Ops/sec

Related benchmarks:

JSON.parse vs JSON.stringify (version: 0)

Comparing performance of JSON.parse vs JSON.stringify

Comparing performance of: JSON.parse vs JSON.stringify

Created: 9 months ago by: Guest

Jump to the latest result

JSON.parse

JSON.stringify

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):