Benchmark: push spread irek2

Tests:

push
let arr = [10]; const a = 1; arr.push(a)
spread operator
let arr = [10]; const a = 1; arr = [...arr, a]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
push
spread operator

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 its test cases.

**Benchmark Overview**

MeasureThat.net is a website where users can create and run JavaScript microbenchmarks. The goal of these benchmarks is to measure the performance differences between various approaches in executing specific JavaScript operations.

**Benchmark Definition JSON**

The provided benchmark definition json contains minimal information:

*   "Name": This is the name of the benchmark, which is "push spread irek2" in this case.
*   "Description": The description field is left blank.
*   "Script Preparation Code": There is no script preparation code specified for this benchmark. However, there is an option to add HTML preparation code, but it's not filled out in the provided example.
*   "Html Preparation Code": Similar to the Script Preparation Code, this field is also empty.

**Individual Test Cases**

The benchmark consists of two individual test cases:

1.  **Test Case 1: push**
    *   Benchmark Definition:
        ```javascript
let arr = [10];
const a = 1;
arr.push(a);
```
    This test case measures the performance difference between using `push()` to add an element to the end of an array versus not using `push()`.
2.  **Test Case 2: spread operator**
    *   Benchmark Definition:
        ```javascript
let arr = [10];
const a = 1;
arr = [...arr, a];
```
    This test case measures the performance difference between using the spread operator (`...`) to create a new array versus not using `push()`.

**Pros and Cons of Each Approach**

The two approaches used in these benchmarks have different characteristics:

*   **Push()**
    *   Pros:
        *   Well-supported by most browsers
        *   Suitable for adding an element to the end of an array
    *   Cons:
        *   May involve copying the entire array when pushing a large number of elements, leading to inefficient performance in such scenarios.
*   **Spread Operator (....)**
    *   Pros:
        *   Efficiently creates new arrays without modifying existing ones
        *   Suitable for creating a shallow copy of an array
    *   Cons:
        *   Not supported by older browsers or IE11.

Related benchmarks:

push spread irek2 (version: 0)

Comparing performance of: push vs spread operator

Created: 6 years ago by: Guest

Jump to the latest result

push

spread operator

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):