Benchmark: LocaleCompare - MeasureThat.net

Script Preparation code:

var a = "Application/JSON"
var b = "Text/HTML"
var c = {
    sensitivity: 'accent'
}

Tests:

a.toLowerCase() === "application/json"
a.toLowerCase() === "application/json"
a.toUpperCase() === "APPLICATION/JSON"
a.toUpperCase() === "APPLICATION/JSON"
a.localeCompare("application/json", undefined, c)
a.localeCompare("application/json", undefined, c)
b.toLowerCase() === "application/json"
b.toLowerCase() === "application/json"
b.toUpperCase() === "APPLICATION/JSON"
b.toUpperCase() === "APPLICATION/JSON"
b.localeCompare("application/json", undefined, c)
b.localeCompare("application/json", undefined, c)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
a.toLowerCase() === "application/json"
a.toUpperCase() === "APPLICATION/JSON"
a.localeCompare("application/json", undefined, c)
b.toLowerCase() === "application/json"
b.toUpperCase() === "APPLICATION/JSON"
b.localeCompare("application/json", undefined, c)

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

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I'd be happy to help explain the JavaScript microbenchmark you've provided.

**Benchmark Overview**

The benchmark measures the performance of the `localeCompare` function in different scenarios, specifically with strings and arrays. The test cases compare the lowercase, uppercase, and locale-compare versions of two strings: "Application/JSON" and "Text/HTML". Some test cases use an array variable instead of a string.

**Options Compared**

The benchmark compares the following options:

1. `toLowerCase()` vs. `toUpperCase()`: This test case checks how long it takes to compare two identical strings using either lowercase or uppercase conversion.
2. `localeCompare()` with and without locale arguments: This test case measures the performance of the `localeCompare` function with and without providing a locale argument.
3. Using an array variable vs. using a string variable: One test case compares the performance of accessing an array element (`a.localeCompare`) versus accessing a string property directly (`a.localeCompare`).

**Pros and Cons**

Here's a brief summary of the pros and cons for each option:

1. `toLowerCase()` vs. `toUpperCase()`:
	* Pros: Simple and straightforward test case.
	* Cons: May not accurately represent real-world usage, as locale conversion is often more complex than just converting to lowercase or uppercase.
2. `localeCompare()` with and without locale arguments:
	* Pros: More realistic representation of how `localeCompare` would be used in practice.
	* Cons: Requires more setup and configuration for the test case (e.g., defining the locale object `c`).
3. Using an array variable vs. using a string variable:
	* Pros: Can help identify performance differences due to binding or caching.
	* Cons: May not accurately represent real-world usage, as accessing an array element is typically more expensive than accessing a property directly.

**Library and Purpose**

In this benchmark, the `localeCompare` function is used from the built-in JavaScript standard library. The purpose of `localeCompare` is to compare two strings according to a locale-specific collation order. It's commonly used for tasks like sorting or comparing dates.

**Special JS Feature/Syntax (None)**

This benchmark doesn't use any special JavaScript features or syntax beyond the basics.

**Other Alternatives**

If you're interested in running this benchmark with other environments or libraries, here are some alternatives:

* Node.js: You can run the same benchmark using Node.js by creating a new file with the same script and HTML preparation code.
* Browser-specific browsers: You can also use alternative browsers like Chrome or Edge to measure performance differences.

Keep in mind that running benchmarks on different environments may produce varying results due to differences in execution engines, caching, or other factors.

Related benchmarks:

LocaleCompare (version: 0)

Comparing performance of: a.toLowerCase() === "application/json" vs a.toUpperCase() === "APPLICATION/JSON" vs a.localeCompare("application/json", undefined, c) vs b.toLowerCase() === "application/json" vs b.toUpperCase() === "APPLICATION/JSON" vs b.localeCompare("application/json", undefined, c)

Created: 4 years ago by: Guest

Jump to the latest result

a.toLowerCase() === "application/json"

a.toUpperCase() === "APPLICATION/JSON"

a.localeCompare("application/json", undefined, c)

b.toLowerCase() === "application/json"

b.toUpperCase() === "APPLICATION/JSON"

b.localeCompare("application/json", undefined, c)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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