Benchmark: Array.indexOf() - MeasureThat.net

Script Preparation code:

var arr = [];
var i,j  = 0;
while (i++ < 100000)
  arr.push(i);

Tests:

Test with 10000
while (i++ < 10000) arr.indexOf(i+1);
Test with milion
while (i++ < 1000000) arr.indexOf(i+1);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test with 10000
Test with milion

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.

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

**Benchmark Overview**

The benchmark is designed to measure the performance of JavaScript's `indexOf()` method on an array. The test creates an array with 100,000 elements (in the first test case) or 1,000,000 elements (in the second test case), and then iterates through the array while calling `arr.indexOf(i+1)` in a loop.

**Options Compared**

The benchmark compares two different approaches:

1. **Test with 10000**: This test case uses a smaller array size and a shorter loop iteration (up to 10,000 iterations).
2. **Test with milion**: This test case uses a larger array size and a longer loop iteration (up to 1,000,000 iterations).

**Pros and Cons of Different Approaches**

* **Smaller Array Size and Shorter Loop Iteration (Test with 10000)**:
	+ Pros: Less memory usage, potentially faster execution due to smaller data set.
	+ Cons: May not accurately represent real-world performance scenarios, as it's a relatively small dataset.
* **Larger Array Size and Longer Loop Iteration (Test with milion)**:
	+ Pros: More representative of real-world performance scenarios, potentially more accurate results.
	+ Cons: Higher memory usage, potentially slower execution due to larger data set.

**Library and Purpose**

The benchmark uses the `Array` object, which is a built-in JavaScript object that represents an array of values. The `indexOf()` method is used to find the index of a specified value within the array.

**Special JS Feature or Syntax**

There are no special features or syntax mentioned in this benchmark.

**Other Considerations**

* **Device and Browser Variability**: The benchmark measures performance across different devices (Desktop) and browsers (Firefox 61).
* **Operating System**: The benchmark is run on Windows, which may impact results due to operating system-specific optimizations.
* **JavaScript Engine Optimizations**: The JavaScript engine used by Firefox (Gecko) may optimize certain operations, affecting the benchmark's accuracy.

**Alternative Benchmarks**

If you're interested in exploring alternative approaches, here are a few options:

1. **Benchmarking Array Splices**: Measure the performance of array modifications using `splice()`, such as inserting or removing elements.
2. **Array Indexing Algorithms**: Compare different indexing algorithms, like binary search vs. linear search, for large datasets.
3. **JavaScript Engine Comparison**: Create benchmarks that compare performance across multiple JavaScript engines (e.g., V8, SpiderMonkey) on different platforms.

Keep in mind that the specific benchmark and approach will depend on your goals and focus areas.

Related benchmarks:

Array.indexOf() (version: 0)

Comparing performance of: Test with 10000 vs Test with milion

Created: 7 years ago by: Guest

Jump to the latest result

Test with 10000

Test with milion

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):