Benchmark: lodash vs native toUpper

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

var a = "aaa";
var b = null;
var c = undefined;

Tests:

native
a.toUpperCase(); b && b.toUpperCase(); c && c.toUpperCase();
lodash
_.toUpper(a); _.toUpper(b); _.toUpper(c);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native
lodash

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark definition and test cases to understand what is being tested.

**Benchmark Definition JSON**

The benchmark definition JSON contains two main sections:

1. **Script Preparation Code**: This section defines the JavaScript variables `a`, `b`, and `c` with specific values: `"aaa"`, `null`, and `undefined`. These variables will be used in the test cases.
2. **Html Preparation Code**: This section includes a script tag that loads the Lodash library (version 4.17.4) from a CDN.

**Test Cases**

There are two individual test cases:

1. **Native Test Case**
	* The benchmark definition code is: `a.toUpperCase();\r\nb && b.toUpperCase();\r\nc && c.toUpperCase();\r\n`
	* This test case checks the performance of the native `toUpperCase()` method on JavaScript strings.
2. **Lodash Test Case**
	* The benchmark definition code is: `_.toUpper(a);\r\n_.toUpper(b);\r\n_.toUpper(c);`
	* This test case checks the performance of the Lodash `toUpper()` function.

**Library and Purpose**

The Lodash library provides a utility function `toUpper()` that converts strings to uppercase. The purpose of this library is to provide a standardized, tested, and optimized way to perform common string operations.

**Special JavaScript Feature/Syntax**

There are no specific special JavaScript features or syntax used in these test cases. However, it's worth noting that the use of the `&&` operator with `null` or `undefined` values (e.g., `b && b.toUpperCase()`) is a common pattern in JavaScript to avoid null reference errors.

**Pros and Cons**

Here are some pros and cons of using the native `toUpperCase()` method versus the Lodash `toUpper()` function:

* **Native `toUpperCase()` Method**
	+ Pros:
		- Built-in method, no additional library dependencies.
		- Typically faster due to being a built-in method.
	+ Cons:
		- May not be as flexible or customizable as external libraries.
		- Performance can vary across different browsers and engines.
* **Lodash `toUpper()` Function**
	+ Pros:
		- More flexible and customizable than native methods.
		- Provides a standardized, tested, and optimized way to perform string operations.
	+ Cons:
		- Requires an additional library dependency.
		- May introduce overhead due to the need for importing the Lodash library.

**Other Alternatives**

If you don't want to use the native `toUpperCase()` method or the Lodash `toUpper()` function, you can also consider using other libraries like:

* **String.prototype.toCapital()**: Some browsers (e.g., Chrome) provide a built-in method for converting strings to uppercase.
* **Custom implementation**: You can implement your own string conversion logic using JavaScript's built-in methods and operators.

However, keep in mind that these alternatives may not be as efficient or flexible as the native `toUpperCase()` method or the Lodash `toUpper()` function.

Related benchmarks:

lodash vs native toUpper (version: 0)

Comparing performance of: native vs lodash

Created: 4 years ago by: Guest

Jump to the latest result

native

lodash

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):