Benchmark: Array.prototype.concat vs spread without JQuery

Tests:

Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.concat
spread operator

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser/OS: Chrome 105 on Linux

View result in a separate tab

Test name	Executions per second
Array.prototype.concat	8201330.5 Ops/sec
spread operator	38369176.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided JSON represents a JavaScript microbenchmark that compares two approaches for concatenating arrays: the traditional `concat()` method and the new ES6 spread operator (`...`).

**What is being tested?**

The benchmark tests which approach is faster between these two methods:

1. `Array.prototype.concat(params)` ( traditional approach)
2. `[ 1, 2, ...params ]` (new ES6 spread operator)

**Options compared**

Two options are compared in this benchmark:

* Option 1: The traditional `concat()` method
	+ Pros:
		- Wide browser support (most browsers have implemented `concat()`)
	+ Cons:
		- Can be slower due to its implementation details (e.g., creating a new array)
* Option 2: The new ES6 spread operator (`...`)

**Pros and Cons**

* Option 1 (traditional approach):
	+ Pros:
		- Wide browser support
	+ Cons:
		- Can be slower due to its implementation details
* Option 2 (new ES6 spread operator):
	+ Pros:
		- Faster performance
	+ Cons:
		- May not work in older browsers that don't support the new syntax

**Library and syntax**

There are no libraries mentioned in this benchmark. The test only uses built-in JavaScript features.

**Special JS feature or syntax**

The benchmark utilizes the new ES6 spread operator (`...`), which was introduced in ECMAScript 2015 (ES6). This feature allows you to create a new array by spreading elements from an existing array.

**Other alternatives**

If you want to test other approaches, you could also consider:

* Using `Array.prototype.push()`
* Using `Array.prototype.splice()`
* Using a custom implementation

However, these alternatives might not be as straightforward or widely supported as the traditional `concat()` method and the new ES6 spread operator.

**Benchmark preparation code**

The provided JSON doesn't contain any script or HTML preparation code. The benchmark only provides two test cases with specific JavaScript code snippets to compare.

I hope this explanation helps!

Related benchmarks:

Array.prototype.concat vs spread without JQuery (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: Array.prototype.concat vs spread operator

Created: 2 years ago by: Guest

Jump to the latest result

Array.prototype.concat

spread operator

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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