Benchmark: index에 요소 추가 (배열요소 문자)

Script Preparation code:

var arr = ['홍길동', '소지섭']

Tests:

Array.prototype.concat
var a = arr.concat(['최창현'])
spread operator
var a = ['최창현', ...arr]
Array.prototype.splice
var a = arr.splice(0, 0, '최창현')
Array.prototype.unshift
var a = arr.unshift('최창현')
Array.prototype.push
var a = arr.push('최창현')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

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

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.concat	2984658.8 Ops/sec
spread operator	6547616.5 Ops/sec
Array.prototype.splice	9383.6 Ops/sec
Array.prototype.unshift	1954.4 Ops/sec
Array.prototype.push	7675949.0 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!

**What is being tested?**

The provided JSON represents a benchmark test suite that compares the performance of different array manipulation methods in JavaScript:

1. `Array.prototype.concat()`
2. Spread operator (`var a = ['최창현', ...arr]`)
3. `Array.prototype.splice()`
4. `Array.prototype.unshift()`
5. `Array.prototype.push()`

**Options compared**

Each test case is designed to measure the performance of a specific array method, with different inputs and outputs. The options being compared are:

* `concat()`: concatenates an array with another array or a value
* Spread operator (`...`): spreads an array's elements into another array
* `splice()`: modifies an array by removing or adding elements at a specified index
* `unshift()`: adds one or more elements to the beginning of an array
* `push()`: adds one or more elements to the end of an array

**Pros and Cons**

Here's a brief overview of each method's performance characteristics:

* `concat()`: Generally slower than other methods due to its overhead in creating a new array.
	+ Pros: Easy to use, predictable results
	+ Cons: Inefficient for large arrays
* Spread operator (`...`): Fast and efficient, but can lead to unexpected behavior if not used carefully.
	+ Pros: Efficient, flexible
	+ Cons: Can be error-prone, may cause issues with older browsers
* `splice()`: Moderate performance, suitable for most use cases.
	+ Pros: Flexible, suitable for various array operations
	+ Cons: May have slower performance than other methods for very large arrays
* `unshift()`: Similar to `concat()` in terms of performance, but may be slightly faster due to its lower overhead.
	+ Pros: Fast, predictable results
	+ Cons: Less intuitive than `push()`
* `push()`: Generally the fastest method, especially for adding elements at the end of an array.
	+ Pros: Efficient, suitable for most use cases
	+ Cons: May lead to issues with array indexing if not used carefully

**Library and special JS features**

In this benchmark, no libraries or special JavaScript features are used. The focus is on comparing the performance of built-in array methods.

However, it's worth noting that some modern browsers support additional array features like `Array.prototype.at()`, which can affect performance. Additionally, some older browsers may not support certain array methods or features, which could impact benchmark results.

**Other alternatives**

If you're looking for alternative benchmarks or testing frameworks for JavaScript, here are a few options:

* V8 Benchmark Suite: A set of microbenchmarks designed to test the performance of the V8 JavaScript engine.
* JSPerf: A popular online platform for running and comparing JavaScript benchmarks.
* Microbenchmarking libraries like `micro-benchmark` (npm) or `benchmark` (GitHub): These libraries provide a simple way to create and run microbenchmarks.

Keep in mind that each benchmark suite has its own strengths and weaknesses, and some may be more suitable for specific use cases than others.

Related benchmarks:

index에 요소 추가 (배열요소 문자) (version: 0)

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

Created: 4 years ago by: Registered User

Jump to the latest result

Array.prototype.concat

spread operator

Array.prototype.splice

Array.prototype.unshift

Array.prototype.push

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):