Benchmark: parseInt value comparison

Tests:

parseInt num
parseInt(123)
parseInt valid string
parseInt('123')
parseInt invalid string
parseInt('abc')
parseInt undefined
parseInt(window.asdf)
parseInt null
parseInt(null)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
parseInt num
parseInt valid string
parseInt invalid string
parseInt undefined
parseInt null

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**Benchmark Definition:**
The provided JSON represents a benchmark definition, which is essentially a description of what needs to be tested in a specific scenario. In this case, the benchmark definition is as simple as a call to `parseInt()`, which takes an argument.

There are two options being compared here:

1.  **Parsing numeric values:** The first option involves passing a numeric value (in this case, `123`) to `parseInt()`. This tests how the function handles integer inputs.
2.  **Parsing strings:** The second option involves passing a string (`"abc"`) to `parseInt()`, which is expected to return `NaN` (Not a Number) because it cannot be converted to an integer.

**Options Comparison:**
Now, let's examine both options:

*   **Numeric Values:** When you pass a numeric value to `parseInt()`, it returns the corresponding integer. For example, `parseInt(123)` would return `123`. This option tests how well JavaScript handles simple integer conversions.
    *   Pros:
        *   Relevant for most practical use cases where integers are used extensively in programming.
        *   Helps identify performance issues with integer parsing.
    *   Cons:
        *   May not cover edge cases or unexpected behavior when dealing with large or complex numbers.

*   **Parsing Strings:** When you pass a string to `parseInt()`, it attempts to convert the string into an integer. However, this conversion fails if the string does not represent a valid integer (e.g., `"abc"`). In such cases, `parseInt()` returns `NaN`.
    *   Pros:
        *   Helps identify performance issues with string parsing and incorrect results due to invalid input.
        *   Useful for detecting edge cases in JavaScript code that may lead to unexpected behavior.
    *   Cons:
        *   May be less relevant for scenarios where integers are the primary data type.

**Other Considerations:**
When it comes to testing `parseInt()` with different inputs, you might also want to consider additional scenarios such as:

*   Handling non-numeric characters within strings (e.g., `parseInt("123abc")`)
*   Edge cases like very large or small integers
*   Support for base conversion (e.g., parsing numbers in different bases)

**Library and Purpose:**
The `parseInt()` function is a built-in JavaScript function that parses a string representing an integer (an integer literal) to a number. It is used to convert string representations of integers to actual numeric values.

**Special JS Feature or Syntax:**
There are no special features or syntax in this benchmark definition, as it focuses on the core functionality of `parseInt()`.

**Alternatives:**
If you were to create an alternative benchmarking framework, some potential alternatives could include:

*   **Benchmarking Frameworks:** Consider using established frameworks like Benchmark.js or Benchmark.ch to simplify benchmark creation and execution.
*   **Test Frameworks:** Utilize test frameworks like Jest or Mocha for writing and running tests that cover various aspects of JavaScript performance.
*   **Performance Profilers:** Leverage tools like Chrome DevTools' Performance Panel or Node.js built-in profiling tools for more detailed analysis of JavaScript performance.

Keep in mind that the choice of alternative depends on your specific needs, preferences, and the requirements of your project.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser/OS: Chrome 116 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
parseInt num	10347516.0 Ops/sec
parseInt valid string	10358261.0 Ops/sec
parseInt invalid string	10321128.0 Ops/sec
parseInt undefined	2253555.8 Ops/sec
parseInt null	7725827.5 Ops/sec

Related benchmarks:

parseInt value comparison (version: 0)

Comparing performance of: parseInt num vs parseInt valid string vs parseInt invalid string vs parseInt undefined vs parseInt null

Created: one year ago by: Guest

Jump to the latest result

parseInt num

parseInt valid string

parseInt invalid string

parseInt undefined

parseInt null

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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