Benchmark: Function pre declared vs function declared on go.

HTML Preparation code:

<div id=''></div>

Tests:

Function outside
function testingA(text) { console.log(text); } for (i = 0; i < 10000; i++) { testingA(i); }
Function inside
for (i = 0; i < 10000; i++) { function testingB(text) { console.log(text); } testingB(i); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Function outside
Function inside

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Browser/OS: Chrome 87 on Windows

View result in a separate tab

Test name	Executions per second
Function outside	3.4 Ops/sec
Function inside	2.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the explanation into sections to make it easier to understand.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmark test case named "Function pre declared vs function declared on go." The benchmark compares two approaches:

1. Function declaration outside the loop (e.g., `testingA(i)`)
2. Function declaration inside the loop (e.g., `function testingB(text) { ... } testingB(i)`)

**Options Compared**

The options being compared are:

* **Function declaration location**: Whether to declare a function outside or inside a loop.
* **Performance impact**: The performance difference between these two approaches.

**Pros and Cons of Each Approach**

1. **Function Declaration Outside the Loop (e.g., `testingA(i)`):**
	* Pros:
		+ Easier to read and maintain, as the function declaration is separate from the loop logic.
		+ Can be optimized by inlining the function or using a cache.
	* Cons:
		+ May incur additional overhead due to the need for a function call.
2. **Function Declaration Inside the Loop (e.g., `function testingB(text) { ... } testingB(i)`):**
	* Pros:
		+ Avoids the overhead of an extra function call.
	* Cons:
		+ Can make the code harder to read and maintain, as the loop logic is intertwined with the function declaration.

**Considerations**

* When dealing with loops, it's essential to consider the trade-off between readability and performance. In some cases, a small performance gain may not be worth the added complexity.
* The choice of approach depends on the specific use case and requirements.

**Library Usage (None)**

There are no libraries mentioned in this benchmark definition or individual test cases.

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

There is no special JavaScript feature or syntax used in this benchmark. It only employs standard JavaScript features.

**Alternative Approaches**

Other alternatives to consider when dealing with loops and function declarations include:

* **Immediately Invoked Function Expressions (IIFE)**: A technique that avoids the overhead of a function call by executing the code immediately after declaration.
* **Closures**: A concept where a function has access to its outer scope, which can be useful in certain performance-critical situations.

In this specific benchmark, using an IIFE or closure would not change the outcome, as the comparison is between declaring a function outside and inside the loop.

Related benchmarks:

Function pre declared vs function declared on go. (version: 0)

Comparing performance of: Function outside vs Function inside

Created: 3 years ago by: Guest

Jump to the latest result

Function outside

Function inside

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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