Benchmark: JS multiple function arguments vs. single arguments object (without var) 2

Script Preparation code:

const data = { a: 1, b: 2, c: 3, d: 4, e: 5, f: 6 };

function f1(a, b, c, d, e, f, g) {
  return a + b + c + d + e + f + g;
}

function f2(p) {
  return p.a + p.b + p.c + p.d + p.e + p.f + p.g;
}

Tests:

Multiple arguments
f1(data.a, data.b, data.c, data.d, data.e, data.f, Math.random())
args object
f2({ a: data.a, b: data.b, c: data.c, d: data.d, e: data.e, f: data.f, g: Math.random() })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Multiple arguments
args object

Fastest: N/A

Slowest: N/A

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/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Mac OS X 10.15.7

View result in a separate tab

Multiple arguments

96.2M/s

args object

95.6M/s

View exact numbers

Test name	Executions per second
✓ Multiple arguments	96,173,040 Ops/sec
args object	95,606,176 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

LLMs can make mistakes. Check important info.

The benchmark outlined in the provided JSON tests the performance differences between two different methods of passing arguments to JavaScript functions: using multiple individual arguments and using a single arguments object.

### Benchmark Functions

1. **Function f1 (Multiple Arguments)**:
   - This function takes multiple arguments directly: `a`, `b`, `c`, `d`, `e`, `f`, and an additional argument `g`. 
   - It returns the sum of these arguments.

2. **Function f2 (Arguments Object)**:
   - This function takes a single parameter `p`, which is expected to be an object. Inside the function, it accesses the properties of this object (`p.a`, `p.b`, etc.) to return their sum.
   - The benchmark case creates an object with properties that correspond to the function parameters before passing it to `f2`.

### Test Cases

- **Test Case 1**: `f1(data.a, data.b, data.c, data.d, data.e, data.f, Math.random())`
  - This case measures the execution speed of `f1` with explicit parameters.
  
- **Test Case 2**: `f2({ a: data.a, b: data.b, c: data.c, d: data.d, e: data.e, f: data.f, g: Math.random() })`
  - This case measures the execution speed of `f2`, which sums the properties of the passed object.

### Performance Results

The benchmark results show that `f1` (multiple arguments) executed at approximately **96,173,040** executions per second, while `f2` (arguments object) executed at about **95,606,176** executions per second. This indicates that `f1`, the method with individual arguments, is marginally faster than passing an object but both approaches demonstrated high performance.

### Pros and Cons

#### Multiple Arguments (`f1`):
- **Pros**:
  - Directly defining parameters may lead to better optimization by the JavaScript engine.
  - Easier to understand and use for straightforward cases where the number of parameters is fixed.
- **Cons**:
  - Inflexibility when it comes to changing the number of arguments. Adding more parameters requires changing the function signature.

#### Arguments Object (`f2`):
- **Pros**:
  - More flexible since the function can accept a varying number of arguments without changing the signature. 
  - Easier to manage when dealing with numerous optional parameters.
- **Cons**:
  - Potentially slower as it requires property lookups on the object, which can incur overhead.
  - Slightly more complex syntax, which might impact readability in simple cases.

### Considerations for Choosing Between Approaches

1. **Function Signature Complexity**: Use multiple arguments for simpler cases and an arguments object for complex or optional parameters.
   
2. **Performance Needs**: If execution speed is paramount, and the function's structure allows it, favor using multiple arguments.

3. **Code Maintainability**: In larger applications, structuring functions with objects can enhance maintainability, especially if the function is expected to evolve over time.

### Alternatives

Other alternatives for function argument passing in JavaScript include:
- **Rest Parameters**: Syntax like `function f(...args)` allows for a variable number of arguments to be passed as an array. This combines flexibility with a cleaner syntax.
- **Destructuring**: You can destructure parameters directly from objects, improving readability and maintainability while still taking advantage of an object’s flexibility.

The performance trade-offs between these methods can vary with different use cases, and developers should choose based on the specific context and requirements of their applications.

JS multiple function arguments vs. single arguments object (without var) 2 (version: 1)

Comparing performance of: `Multiple arguments vs args object`

Created: one year ago by: Guest

Go to the latest result

Multiple arguments

args object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

JS multiple function arguments vs. single arguments object (without var) 2 (version: 1)

Comparing performance of: Multiple arguments vs args object

Created: one year ago by: Guest

Go to the latest result

Multiple arguments

args object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

Related benchmarks

Comparing performance of: `Multiple arguments vs args object`