Benchmark: push vs spread 25

Script Preparation code:

let sumArray = [];

/**const asd0 = ["asdasdasdasd"];
const asd1 = [{asd: 234 }, "0dfsdt34^45    345345435", 345345, "sdfkgsdfékgmsdéflmg sdélfgm"];
const asd2 = [23452345 + 2, true, false];
const asd4 = ["asdasdasdafdgsdf dfg df sdfgsdfasd  r", "asddsa"];
const asd8 = [[4, 8, 15, 16, 23, 42], {4: 8, 15: 16, 23: 42 }, {4: "8", 15: "16", 23: "42" }];

sumArray = [...asd0, ...asd1, ...asd2, ...asd4, ...asd8];**/

sumArray.push("asdasdasdasd");
sumArray.push({asd: 234 });
sumArray.push("0dfsdt34^45    345345435");
sumArray.push(345345);
sumArray.push("sdfkgsdfékgmsdéflmg sdélfgm");
sumArray.push(23452345 + 2);
sumArray.push("asdasdasdafdgsdf dfg df sdfgsdfasd  r");
sumArray.push(true);
sumArray.push("asddsa");
sumArray.push([4, 8, 15, 16, 23, 42]);
sumArray.push({4: 8, 15: 16, 23: 42 });
sumArray.push({4: "8", 15: "16", 23: "42" });
sumArray.push(false);

Tests:

js test push
let sumArray = []; sumArray.push("asdasdasdasd"); sumArray.push({asd: 234 }); sumArray.push("0dfsdt34^45 345345435"); sumArray.push(345345); sumArray.push("sdfkgsdfékgmsdéflmg sdélfgm"); sumArray.push(23452345 + 2); sumArray.push("asdasdasdafdgsdf dfg df sdfgsdfasd r"); sumArray.push(true); sumArray.push("asddsa"); sumArray.push([4, 8, 15, 16, 23, 42]); sumArray.push({4: 8, 15: 16, 23: 42 }); sumArray.push({4: "8", 15: "16", 23: "42" }); sumArray.push(false);
js test spread
let sumArray = []; const asd0 = ["asdasdasdasd"]; const asd1 = [{asd: 234 }, "0dfsdt34^45 345345435", 345345, "sdfkgsdfékgmsdéflmg sdélfgm"]; const asd2 = [23452345 + 2, true, false]; const asd4 = ["asdasdasdafdgsdf dfg df sdfgsdfasd r", "asddsa"]; const asd8 = [[4, 8, 15, 16, 23, 42], {4: 8, 15: 16, 23: 42 }, {4: "8", 15: "16", 23: "42" }]; sumArray = [...asd0, ...asd1, ...asd2, ...asd4, ...asd8];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
js test push
js test spread

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Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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I'd be happy to help you understand the benchmark being tested on MeasureThat.net.

**Benchmark Definition**

The benchmark definition is a JavaScript code snippet that prepares an array `sumArray` by performing two different operations:

1. Using the spread operator (`...`) to concatenate multiple arrays: `sumArray = [...asd0, ...asd1, ...asd2, ...asd4, ...asd8];`
2. Using the `push()` method to add elements one by one to the array: `sumArray.push("asdasdasdasd"); sumArray.push({asd: 234});`

The code snippet also includes a few examples of data being pushed to the array.

**Options Compared**

The two options being compared are:

1. **Spread Operator (`...`)**: This method creates a new array by copying elements from existing arrays and concatenating them.
2. **`push()` Method**: This method adds one or more elements to the end of an array.

**Pros and Cons of Each Approach**

**Spread Operator (`...`)**

Pros:

* More efficient for large datasets, as it avoids creating intermediate arrays.
* Can be used to merge multiple arrays in a single operation.

Cons:

* Requires a compatible version of JavaScript (ES6+).
* Can be slower than `push()` for small datasets or when adding elements one by one.

**`push()` Method**

Pros:

* Generally faster and more lightweight, as it avoids creating intermediate arrays.
* Can be used with older versions of JavaScript (pre-ES6).

Cons:

* Requires multiple separate operations to add all elements at once.
* May create temporary arrays during execution.

**Other Considerations**

When choosing between the spread operator and the `push()` method, consider the following factors:

* **Data size**: For large datasets, the spread operator is likely to be more efficient. For small datasets or when adding elements one by one, the `push()` method might be faster.
* **JavaScript version**: If you need to support older versions of JavaScript, the `push()` method might be a better choice.

**Library and Special JS Features**

There are no libraries mentioned in the benchmark definition, but there is a mention of Chrome 100 as a browser. No special JavaScript features or syntax are being tested in this benchmark.

**Alternatives**

If you're interested in exploring alternative approaches for testing array concatenation performance, consider using:

* `concat()` method: This method creates a new array by copying elements from the original array.
* `Array.prototype.splice()`: This method modifies an existing array and returns the removed elements.

Related benchmarks:

push vs spread 25 (version: 0)

Comparing performance of: js test push vs js test spread

Created: 4 years ago by: Guest

Jump to the latest result

js test push

js test spread

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):