Benchmark: String to bool - MeasureThat.net

Script Preparation code:

var str = "False";

Tests:

Using JSON
JSON.parse(str.toLowerCase());
Comparison
str.toLowerCase() === "true";

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Using JSON
Comparison

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0

Browser/OS: Firefox 61 on Windows

View result in a separate tab

Test name	Executions per second
Using JSON	6814950.0 Ops/sec
Comparison	245816672.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to help explain the JavaScript benchmark.

**What is being tested?**

The provided benchmark tests two different approaches for comparing a string literal ("False") with a boolean value (false) in JavaScript. The test cases are:

1. **Using JSON**: This approach uses `JSON.parse()` to convert the string to a boolean value.
2. **Comparison**: This approach uses a direct comparison operator (`===`) to compare the string with the boolean value.

**Options compared:**

* **Using JSON**: This approach relies on the `JSON.parse()` method, which can be slower and less efficient than other methods due to the overhead of parsing the JSON data.
* **Comparison**: This approach is generally faster and more straightforward, as it only requires a simple comparison operation.

**Pros and Cons:**

* **Using JSON**:
	+ Pros: None notable.
	+ Cons: Slower performance compared to direct comparison.
* **Comparison**:
	+ Pros: Faster performance, straightforward syntax.
	+ Cons: None notable.

**Library usage:**

There is no explicit library being used in this benchmark. However, `JSON.parse()` is a built-in JavaScript method that relies on the ECMAScript standard.

**Special JS feature or syntax:**

The test case "Using JSON" uses the `JSON.parse()` method, which is a standard JavaScript feature introduced in ECMAScript 5 (ES5).

**Benchmark preparation code:**

The script preparation code sets up a variable `str` with the string value `"False"`.

**Other alternatives:**

In JavaScript, there are other ways to achieve the same result as the "Comparison" test case:

* Using the `Boolean()` constructor: `Boolean(str) === false`
* Using the `String()` function and the `==` operator: `str == 'false'`
* Using the `===` operator with a string literal: `str === 'false'`

Note that the performance differences between these alternatives may be negligible, as they are all relatively simple operations. However, using the direct comparison syntax (`===`) is generally the most efficient and recommended approach.

Overall, this benchmark helps evaluate the performance of different approaches for comparing strings with boolean values in JavaScript.

Related benchmarks:

String to bool (version: 0)

Comparing performance of: Using JSON vs Comparison

Created: 6 years ago by: Guest

Jump to the latest result

Using JSON

Comparison

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):