Benchmark: Array elements adding 3

Script Preparation code:

var str = "";
var i;
var element = 'Custom string'

Tests:

by index
var sArr = Array(1000); for (i = 1000; i > 0; i--) { sArr[i] = element; }
by push
var sArr = []; for (i = 1000; i > 0; i--) { sArr.push(element); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
by index
by push

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.

I'd be happy to help you understand the JavaScript microbenchmark on MeasureThat.net.

**What is being tested?**

The benchmark measures how fast two approaches are to add elements to an array: using indexing (`by index`) and using the `push` method. The test creates an array of 1000 elements, initializes it with a custom string "Custom string", and then adds that string to each element in the array.

**Options compared**

There are two options being compared:

1. **By Index**: This approach uses indexing (`sArr[i] = element`) to assign the value to each element in the array.
2. **By Push**: This approach uses the `push` method to add a new element to the end of the array.

**Pros and Cons**

* **By Index**:
	+ Pros: Generally faster for small arrays, as it avoids the overhead of creating a new element and copying the existing value.
	+ Cons: Can be slower for large arrays, as it requires accessing each element individually.
* **By Push**:
	+ Pros: Efficiently handles large arrays by avoiding individual element access, but may incur additional overhead due to the creation of a new element.
	+ Cons: May have performance implications for small arrays.

**Library usage**

None.

**Special JS features or syntax**

The benchmark does not use any special JavaScript features or syntax.

**Other alternatives**

For similar microbenchmarks, you might consider using other libraries like:

* **Benchmark.js**: A popular JavaScript benchmarking library that provides a simple and efficient way to run benchmarks.
* **Microbenchmark**: Another lightweight JavaScript benchmarking library that allows for easy comparison of different implementation approaches.

Keep in mind that the best approach will depend on your specific use case and requirements. If you're working with small arrays, indexing might be faster. For large arrays, pushing elements onto the end of the array is often a better choice.

When writing your own benchmarks, consider using libraries like Benchmark.js or Microbenchmark to simplify the process and ensure accurate results.

Related benchmarks:

Array elements adding 3 (version: 0)

Comparing performance of: by index vs by push

Created: 3 years ago by: Guest

Jump to the latest result

by index

by push

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):