Benchmark: different methods for conditional

Tests:

if statements
function test(comp){ if (comp === null || comp === false || typeof comp === 'undefined') return [] // string if (typeof comp === 'string') return comp // number if (typeof comp === 'number') return comp.toString(); return 'something went wrong'; } test('ss');
switch
function test2(comp){ switch (typeof (comp)) { case 'undefined': return []; case 'string': return comp; case 'number': return comp.toString(); default: throw 'Invalid comp'; } } test2('aa')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
if statements
switch

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):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Definition**

The provided JSON represents a single benchmark definition, which defines two test cases: "if statements" and "switch". The script preparation code is empty, indicating that the tests are already implemented in the JavaScript code. However, there's no HTML preparation code either, suggesting that this is a pure JavaScript microbenchmark.

**Test Cases**

There are only two test cases:

1. **"if statements"`**
This test case checks the performance of using `if` statements to evaluate the type of a variable. The script implementation uses a function called `test(comp)` that returns an array based on the type of `comp`. Specifically:
	* If `comp` is `null`, `false`, or undefined, it returns an empty array.
	* If `comp` is a string, it returns the string itself.
	* If `comp` is a number, it converts the number to a string using `toString()`.
2. **"switch"`**
This test case checks the performance of using a `switch` statement to evaluate the type of a variable. The script implementation uses a function called `test2(comp)` that uses a `switch` statement with cases for different types:
	* `case 'undefined'`: returns an empty array
	* `case 'string'`: returns the string itself
	* `case 'number'`: converts the number to a string using `toString()`
	* `default`: throws an error

**Options Compared**

The benchmark compares two approaches:

1. **`if` statements**: The first test case uses `if` statements to evaluate the type of `comp`. This approach is simple and straightforward.
2. **`switch` statement**: The second test case uses a `switch` statement with cases for different types. This approach can be more efficient than multiple `if` statements, especially when dealing with a small number of distinct values.

**Pros and Cons**

* **`if` statements`**: Pros: simple, easy to understand, and widely supported. Cons: may lead to slower performance due to the overhead of multiple conditional checks.
* **`switch` statement**: Pros: can be more efficient for cases with a small number of distinct values, but may require more code and is less intuitive than `if` statements. Cons: not as widely supported as `if` statements.

**Library Used**

There are no libraries explicitly mentioned in the benchmark definition or test cases. However, it's worth noting that some browsers may have internal optimizations or features that can affect the performance of these tests (e.g., Chrome's just-in-time compilation).

**Special JS Features/Syntax**

There are no special JavaScript features or syntax mentioned in this benchmark.

**Alternatives**

For microbenchmarks like this one, there are other alternatives for measuring performance:

1. **Google Benchmark**: A popular open-source library for benchmarking C++ code (also has JavaScript bindings).
2. **Benchmark.js**: Another popular open-source library for benchmarking JavaScript code.
3. **microbenchmark**: A Node.js module for running microbenchmarks.

Keep in mind that these alternatives may have their own strengths and weaknesses, and the choice of which one to use depends on your specific needs and requirements.

Related benchmarks:

different methods for conditional (version: 0)

Comparing performance of: if statements vs switch

Created: 3 years ago by: Guest

Jump to the latest result

if statements

switch

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):