Benchmark: while vs for - MeasureThat.net

Tests:

for loop
for (let i = 0; i < 1000; i++) {console.log('hello')}
while loop
var i = 1000; while(i--){console.log('hello')}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for loop
while loop

Fastest: N/A

Slowest: N/A

Autogenerated LLM Sumamry (model llama3.2:3b, generated 3 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested.

**Benchmark Definition**

The `while vs for` benchmark compares two different approaches to iterate over a sequence of numbers: the `for` loop and the `while` loop.

**Options Compared**

The benchmark tests:

1. **For Loop**: A traditional `for` loop that iterates over an array using a counter variable (`i`) initialized before the loop, incrementing it at each iteration.
2. **While Loop**: A `while` loop that checks a condition on each iteration and continues if true. In this case, the loop will continue as long as the counter variable `i` is greater than 0.

**Pros and Cons**

* **For Loop**:
	+ Pros: More explicit control over iteration bounds, easier to understand for new developers.
	+ Cons: More verbose code, might be slower due to the overhead of incrementing a variable.
* **While Loop**:
	+ Pros: Can be more concise and flexible, as it allows for conditional iterations.
	+ Cons: Less intuitive for some developers, might lead to hard-to-debug issues if not used carefully.

**Other Considerations**

The benchmark does not consider other factors that could affect performance, such as:

* Array size: The benchmark uses a fixed array length of 1000. Larger arrays may affect the results.
* Loop body complexity: The loop body is very simple in this example (just logging "hello"). More complex loops might lead to different results.

**Library Usage**

The test case does not use any libraries beyond the standard JavaScript `console.log` function.

**Special JS Features/Syntax**

There are no special JavaScript features or syntax used in these tests. The code is straightforward and follows standard practices.

**Other Alternatives**

If you wanted to create a similar benchmark, you could explore other iteration techniques, such as:

* **For-In Loop**: Iterates over the array using an object with numeric properties.
* **Array.prototype.forEach()**: A more modern way of iterating over arrays without explicit loops.
* **Recursion**: Using recursive functions to iterate over sequences.

Keep in mind that each approach has its own trade-offs, and the best choice depends on the specific use case and performance requirements.

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/90.0.4430.212 Safari/537.36 Edg/90.0.818.62

Browser/OS: Chrome 90 on Windows

View result in a separate tab

Test name	Executions per second
for loop	249.1 Ops/sec
while loop	250.6 Ops/sec

Related benchmarks:

while vs for (version: 0)

Comparing performance of: for loop vs while loop

Created: 3 years ago by: Registered User

Jump to the latest result

for loop

while loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Sumamry (model llama3.2:3b, generated 3 days ago):