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spread operator vs push identical
(version: 0)
Compare speed between spread and push for identical use
Comparing performance of:
spread operator vs Push
Created:
5 years ago
by:
Guest
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Tests:
spread operator
var params = [ "hello", true, 7 ] var other = [ ...params, 1, 2 ]
Push
var params = [ "hello", true, 7 ]; params.push(1); params.push(2);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
spread operator
Push
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Purpose** The benchmark is designed to compare the speed of two different ways to add elements to an array in JavaScript: using the spread operator (`...`) and using the `push()` method. **Options Compared** There are two test cases: 1. **Spread Operator**: This test case uses the spread operator to create a new array by duplicating the existing array (`params`) and adding two new elements (`1` and `2`) to it. ```javascript var params = [ "hello", true, 7 ]; var other = [ ...params, 1, 2 ]; ``` 2. **Push**: This test case uses the `push()` method to add two new elements to the existing array (`params`). ```javascript var params = [ "hello", true, 7 ]; params.push(1); params.push(2); ``` **Pros and Cons** * **Spread Operator**: + Pros: Efficient way to create a new array with additional elements. + Cons: Requires JavaScript version 2015 or later (ECMAScript 6) to use. * **Push**: + Pros: Widely supported across different JavaScript versions and browsers. + Cons: Can be slower than the spread operator for large arrays, as it involves mutating the original array. **Library/Functionality Used** None of the test cases use any external libraries or functions. The focus is solely on comparing the performance of two native JavaScript methods. **Special JS Feature/Syntax** The benchmark doesn't require any special features or syntax beyond what's standard in modern JavaScript (ES6+). **Alternatives** If you want to explore other alternatives, here are a few options: * **Array.prototype.concat()**: This method creates a new array by concatenating two arrays. It's similar to the spread operator but can be slower for large arrays. * **Array.prototype.push.apply()**: This method applies an array as an argument to the `push()` method. While it achieves the same result as the push method, it can be slower due to the overhead of calling a function. Keep in mind that these alternatives may not offer significant performance benefits over the spread operator and push methods used in this benchmark.
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