Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
push and reverse
(version: 3)
Comparing performance of:
instance vs object
Created:
7 years ago
by:
Registered User
Jump to the latest result
Tests:
instance
const array = [] for (let i; i< 100000000; i++) { array.push({}) } array.reverse()
object
const array = [] for (let i; i< 100000000; i++) { array.unshift({}) }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
instance
object
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 provided benchmark and explain what's being tested, compared, and considered. **Benchmark Definition JSON** The provided benchmark definition is empty, which means that the script preparation code and HTML preparation code are also empty. This suggests that the benchmark requires no setup or configuration beyond running the provided JavaScript code. **Individual Test Cases** There are two test cases: 1. **"instance"**: This test case measures the performance of pushing elements onto an array using the `push()` method, followed by reversing the array. 2. **"object"**: This test case measures the performance of unshifting elements onto an array using the `unshift()` method. **Libraries and Features** None of the provided benchmark definitions use a specific JavaScript library. However, it's worth noting that some libraries might be used under the hood by certain browsers or versions (e.g., Web Worker APIs). No special JavaScript features or syntax are mentioned in the benchmark definition. **Comparison Options** The benchmark is comparing two approaches: 1. **Reversing an array using `reverse()`**: This approach involves pushing elements onto an array and then reversing it. 2. **Unshifting elements onto an array using `unshift()`**: This approach involves unshifting elements onto the beginning of an array. **Pros and Cons** **Approach 1: Reversing an array using `reverse()`** Pros: * Simple to implement * Most browsers support this method Cons: * Can be slower due to the reversal process * May incur additional overhead for array resizing **Approach 2: Unshifting elements onto an array using `unshift()`** Pros: * Can be faster since it doesn't require reversing the entire array * More efficient in terms of memory allocation and garbage collection Cons: * Fewer browsers support this method (e.g., older versions of Chrome) * May incur additional overhead for array resizing **Considerations** Other considerations include: * Cache performance: How well do different browsers cache arrays, especially when reversing or unshifting them? * Garbage collection: How does the browser's garbage collector handle the creation and deletion of elements in an array? **Alternatives** If you wanted to create similar benchmarks, you could consider using other JavaScript features or libraries. Some alternatives include: 1. Using a different data structure (e.g., linked lists, stacks, or queues) 2. Implementing custom insertion and removal logic 3. Measuring the performance of specific library functions (e.g., `Array.prototype.forEach()` vs. `for` loops) Keep in mind that each alternative would require modifying the benchmark definitions and test cases to accommodate the new feature or library. Overall, this benchmark provides a straightforward comparison between two common array manipulation techniques, allowing developers to compare the relative performance of different browsers and versions.
Related benchmarks:
arr unshift vs push + reverse (small array)
arr unshift vs push + reverse (small array) one item
arr unshift vs push + reverse ( array 100)
arr unshift vs push + reverse (mid array)
arr unshift vs push + reverse (100 elements)
Comments
Confirm delete:
Do you really want to delete benchmark?