Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
set vs compare functions and set
(version: 0)
Comparing performance of:
compare and set vs Set
Created:
5 years ago
by:
Registered User
Jump to the latest result
Tests:
compare and set
const button = document.createElement('button'); const clickFunction = () => console.log('hola'); for(let i = 0; i< 1000; i++){ if(clickFunction.toString() !== clickFunction.toString()) button.onclick = clickFunction; }
Set
const button = document.createElement('button'); const clickFunction = () => console.log('hola'); for(let i = 0; i< 1000; i++){ button.onclick = clickFunction; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
compare and set
Set
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):
I'll break down the benchmark for you. **Benchmark Overview** The benchmark measures the performance difference between two approaches: 1. **Setting an event listener multiple times**: This involves creating a button element, defining a click function, and setting the `onclick` property of the button to the function 1000 times in a loop. 2. **Comparing functions and setting them as a new event listener**: This approach is similar to the previous one but uses a comparison to create multiple copies of the same function, which is then set as an event listener. **Options Compared** The two options being compared are: 1. **Set**: Setting an event listener multiple times using the `button.onclick = clickFunction` syntax. 2. **Compare and Set**: Creating multiple copies of the same function by comparing it to itself (using `clickFunction.toString() !== clickFunction.toString()`), and then setting each copy as a new event listener. **Pros and Cons** 1. **Set**: * Pros: Simple and straightforward approach, no unnecessary function creation. * Cons: Can lead to multiple copies of the same function being created in memory, which might affect performance if done frequently. 2. **Compare and Set**: * Pros: Reduces memory usage by reusing the same function object across all event listeners, potentially improving performance. * Cons: Creates unnecessary copies of the function, making it slower than a simple set approach. **Other Considerations** * Both approaches can lead to poor performance if done in a loop or for large datasets, as creating and destroying DOM elements, or recompiling the same function repeatedly, can be costly operations. * The use of `toString()` in the "Compare and Set" approach might not be the most efficient way to create copies of the function, as it involves string conversion. **Library/Features Used** None are mentioned explicitly, but the benchmark assumes the presence of: * JavaScript (of course!) * DOM elements ( buttons, specifically) * Event listeners ( onclick property) **Special JS Features/Syntax** None are mentioned in this specific benchmark. However, keep in mind that some features like `let` and `const` declarations, arrow functions (`=>`), and template literals (`\r\n`) might be used implicitly or explicitly in the script preparation code. **Alternatives** Other approaches to setting event listeners could include: 1. **Using a library function**: Some libraries (e.g., Lodash) provide functions for creating event listeners that can improve performance. 2. **Using a wrapper function**: Creating a custom wrapper function around the original function, which encapsulates the event listener creation and management logic. 3. **Using `addEventListener` with multiple listeners**: Using `addEventListener` to attach multiple listeners to an element at once. Keep in mind that the choice of approach depends on the specific use case, performance requirements, and the trade-offs between code readability, maintainability, and execution speed.
Related benchmarks:
loop over Set conditionally vs non-conditionally
Fastest difference between multiple sets
set has vs list includes
set vs array find if exists v2
new Set vs set.clear()
Comments
Confirm delete:
Do you really want to delete benchmark?