Benchmark: push vs splice mytest

Script Preparation code:

const iterations = 1000000;

function push() {
  const arr = [];
  for (let i = 0; i < iterations; i++) {
    arr.push(i);
  }
}

function splice() {
  const arr = [];
  for (let i = 0; i < iterations; i++) {
    arr.splice(i, 0, i);
  }
}

Tests:

push
push();
splice
splice();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
push
splice

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the benchmark and what it tests.

**What is being tested:**

The provided JSON represents a benchmark that compares two different methods of adding elements to an array in JavaScript:

1. `push()`: This test case uses the `push()` method to add elements to an array.
2. `splice()`: This test case uses the `splice()` method to add elements to an array.

**What options are compared:**

The benchmark compares two different approaches to adding elements to an array:

* Using `push()` (the first test case)
* Using `splice()` (the second test case)

**Pros and cons of each approach:**

* **push()**: This method is generally faster than `splice()`, especially when adding a large number of elements. However, it creates a new array each time, which can lead to memory issues if the array grows too large.
* **splice()**: This method modifies the original array by inserting an element at a specific index. While it's slower than `push()`, it doesn't create a new array and is more memory-efficient.

**Library used:**

None in this benchmark.

**Special JS feature or syntax:**

The benchmark uses basic JavaScript features, including functions (`function push()`), loops (`for` loop), and array methods (`push()` and `splice()`).

**Other alternatives:**

There are other ways to add elements to an array in JavaScript:

* Using the spread operator (`...`) with a new array literal (e.g., `[...array, ...newElements]`)
* Using a loop with `array.push(element)` for each element
* Using a single line of code with `array = [...array, ...newElements]`

Related benchmarks:

push vs splice mytest (version: 0)

Comparing performance of: push vs splice

Created: 5 years ago by: Guest

Jump to the latest result

push

splice

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):