Benchmark: Json testing - MeasureThat.net

Script Preparation code:

var str = 'true';

Tests:

Json str
var res = JSON.parse(str);
condition str
var res1 = str === 'true'? true: str;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Json str
condition str

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/103.0.0.0 Safari/537.36

Browser/OS: Chrome 103 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Json str	6061052.0 Ops/sec
condition str	26771542.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**What is being tested?**

The provided benchmark tests two different approaches to handling JSON strings in JavaScript:

1. **JSON.parse()**: This method parses a JSON string into a JavaScript object.
2. **Ternary operator with type coercion**: This approach uses a ternary operator (`str === 'true' ? true : str`) to check if the string is equal to `'true'` and returns either `true` or the original string.

**Options compared**

The benchmark compares two options:

1. **JSON.parse()**: A widely used method for parsing JSON strings.
2. **Ternary operator with type coercion**: An alternative approach that uses a ternary operator to check the string's value.

**Pros and Cons of each approach**

**JSON.parse():**

Pros:

* Explicitly parses the JSON string into an object, which can be useful for further processing or validation.
* Well-documented and widely supported.

Cons:

* Can be slower than the ternary operator approach due to the overhead of parsing the JSON string.
* May not be suitable for very large JSON strings.

**Ternary operator with type coercion:**

Pros:

* Can be faster than JSON.parse() for simple cases, as it avoids the overhead of parsing and uses type coercion.
* Often used in concise code snippets.

Cons:

* Can lead to unexpected behavior if the string is not exactly equal to `'true'` (e.g., due to whitespace or case differences).
* Not explicitly parsing the JSON string into an object, which may make it harder to use in certain contexts.

**Other considerations**

Both approaches have their trade-offs. The ternary operator approach might be suitable for simple cases where performance is critical, but it's essential to consider potential edge cases and ensure that the code behaves correctly.

**Library: None**

There are no external libraries being used in this benchmark.

**Special JS feature or syntax**

The benchmark uses a special JavaScript feature called **type coercion**, which allows comparing two values using a single operator (e.g., `str === 'true'`). This is a standard JavaScript behavior that can lead to unexpected results if not carefully considered.

Related benchmarks:

Json testing (version: 0)

json testing

Comparing performance of: Json str vs condition str

Created: 4 years ago by: Guest

Jump to the latest result

Json str

condition str

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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