Benchmark: index에 요소 추가 (배열요소 Object) - 순서변경

Tests:

Array.prototype.push
var arr1 = [{a:'홍길동'}, {a:'소지섭'}] var name = {a:'최창현'} var a = arr1.push(name)
Array.prototype.unshift
var arr2 = [{a:'홍길동'}, {a:'소지섭'}] var name = {a:'최창현'} var a = arr2.unshift(name)
Array.prototype.splice
var arr3 = [{a:'홍길동'}, {a:'소지섭'}] var name = {a:'최창현'} var a = arr3.splice(0, 0, name)
spread operator
var arr4 = [{a:'홍길동'}, {a:'소지섭'}] var name = {a:'최창현'} var a = [...arr4, name]
Array.prototype.concat
var arr5 = [{a:'홍길동'}, {a:'소지섭'}] var name = {a:'최창현'} var a = arr5.concat([name])

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.push
Array.prototype.unshift
Array.prototype.splice
spread operator
Array.prototype.concat

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36

Browser/OS: Chrome 85 on Windows

View result in a separate tab

Test name	Executions per second
Array.prototype.push	28403130.0 Ops/sec
Array.prototype.unshift	9876230.0 Ops/sec
Array.prototype.splice	11287808.0 Ops/sec
spread operator	4121920.5 Ops/sec
Array.prototype.concat	4643344.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided benchmark definition is a simple JavaScript code snippet that tests the performance of different array manipulation methods in JavaScript. The code is designed to add an element to an array (`arr1.push(name)`), remove the first element from an array (`arr2.splice(0, 0, name)`), insert an element at the beginning of an array (`arr3.unshift(name)`), create a new array by spreading an existing one (`arr4 = [...arr4, name]`), and concatenate two arrays (`arr5.concat([name])`). The benchmark focuses on these four specific methods.

**Options Compared**

The benchmark compares the performance of the following options:

1. **Push**: `Array.prototype.push(name)`
2. **Unshift**: `Array.prototype.unshift(name)`
3. **Splice**: `Array.prototype.splice(0, 0, name)`
4. **Spread Operator**: `arr4 = [...arr4, name]`
5. **Concat**: `arr5.concat([name])`

**Pros and Cons of Each Approach**

Here's a brief overview of the pros and cons of each approach:

1. **Push**:
	* Pros: Efficient, simple to implement.
	* Cons: May not be optimized for performance in all browsers.
2. **Unshift**:
	* Pros: Can be faster than push when dealing with large arrays.
	* Cons: Requires an additional operation (insertion) at the beginning of the array.
3. **Splice**:
	* Pros: Flexible, can remove elements from any position in the array.
	* Cons: May incur higher overhead due to searching and inserting operations.
4. **Spread Operator**:
	* Pros: Elegant, efficient, and concise syntax.
	* Cons: Requires JavaScript version 2015 or later for compatibility.
5. **Concat**:
	* Pros: Simple to implement, can be used with arrays of any size.
	* Cons: May incur overhead due to creating a new array.

**Library Used**

In this benchmark, the `Array.prototype` methods are being tested. The `Array.prototype` is a built-in JavaScript object that provides various methods for manipulating arrays.

**Special JS Features or Syntax**

There is no special JavaScript feature or syntax used in this benchmark. It only relies on standard JavaScript features and array manipulation methods.

**Other Alternatives**

If you're looking for alternative ways to manipulate arrays, consider the following:

1. **Array.prototype.reverse()**: Reverses the array, which can be useful when dealing with large datasets.
2. **Array.prototype.sort()**: Sorts the array in place, which can be efficient for small to medium-sized arrays.
3. **Array.prototype.reduce()**: Applies a reduction function to each element in the array, which can be useful for aggregating data.

Keep in mind that these alternatives may not offer significant performance improvements over the methods tested in this benchmark.

**Conclusion**

The MeasureThat.net benchmark provides valuable insights into the performance of different array manipulation methods in JavaScript. By understanding the pros and cons of each approach, developers can make informed decisions when writing their own code or choosing libraries for projects.

Related benchmarks:

index에 요소 추가 (배열요소 Object) - 순서변경 (version: 4)

Comparing performance of: Array.prototype.push vs Array.prototype.unshift vs Array.prototype.splice vs spread operator vs Array.prototype.concat

Created: 4 years ago by: Registered User

Jump to the latest result

Array.prototype.push

Array.prototype.unshift

Array.prototype.splice

spread operator

Array.prototype.concat

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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