Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Array concat vs spread operator vs push_
(version: 0)
Compare the new ES6 spread operator with the traditional concat() method and push
Comparing performance of:
Array.prototype.concat vs spread operator vs Push
Created:
6 years ago
by:
Guest
Jump to the latest result
Tests:
Array.prototype.concat
const params = [ "hello", true, 7 ]; const other = params.concat(1,2);
spread operator
const params = [ "hello", true, 7 ] const other = [...params,1, 2 ]
Push
const params = [ "hello", true, 7 ]; const other = [...params].push(1, 2);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
Array.prototype.concat
spread operator
Push
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested, compared, and analyzed. **Benchmark Overview** The benchmark is comparing three approaches to concatenate or add elements to an array: 1. `Array.prototype.concat()` 2. The new ES6 spread operator (`...`) 3. `Array.prototype.push()` with multiple arguments **Options Compared** * **concat() method**: This is a traditional way of concatenating arrays in JavaScript. It creates a new array by copying the elements from the original array and adding the new elements. * **Spread Operator (ES6)**: This is a new syntax introduced in ES6 that allows you to spread the elements of an array into a new array using the `...` operator. * **Push() method with multiple arguments**: This approach uses the `push()` method to add one or more elements to the end of the array, but instead of calling it once, we're passing all the elements as separate arguments. **Pros and Cons** * **concat() method**: + Pros: Widely supported, easy to use. + Cons: Creates a new array, can be slower for large arrays. * **Spread Operator (ES6)**: + Pros: Fast, efficient, and readable. + Cons: Requires ES6 support, may not work in older browsers or environments. * **Push() method with multiple arguments**: + Pros: Fast, efficient, and doesn't require creating a new array. + Cons: Can be less readable, requires careful handling of arguments. **Library Usage** None of the benchmarked methods use external libraries. They are all part of the standard JavaScript API. **Special JS Features or Syntax** The benchmark uses the ES6 spread operator (`...`) which is a relatively new syntax introduced in ES6. This feature allows you to spread elements from an array into a new array using the `...` operator. If your environment doesn't support ES6, this may not work as expected. **Other Alternatives** If you need to concatenate arrays, other alternatives include: * Using `Array.prototype.concat()` with an array of arguments: `[1, 2, 3].concat(4, 5)` * Using a custom function or utility method for concatenation However, the spread operator is generally considered the most readable and efficient way to concatenate arrays in modern JavaScript. **Benchmark Preparation Code** The benchmark preparation code is not provided. This might be because it's assumed that the test cases are self-contained and don't require any specific setup. Overall, this benchmark provides a good comparison of three approaches to concatenating arrays in JavaScript, highlighting the trade-offs between speed, efficiency, and readability.
Related benchmarks:
Array.prototype.concat vs Spread operator
concat 2 arrays: Array.prototype.concat vs spread operator
ES6 Array concat vs spread operator
Array concat vs spread operator vs push with more data
Array.prototype.concat vs spread operator real
Comments
Confirm delete:
Do you really want to delete benchmark?