Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Promise vs Try Catch
(version: 1)
Comparing performance of:
try catch vs promise
Created:
one year ago
by:
Registered User
Go to the latest result
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
function getData(){ throw new Error('get data error') }
Tests:
try catch
let response; try { response = getData() }catch(e){ response = e; }
promise
const promise = new Promise((resolve, reject) => { resolve(getData()) }).then( r => r, e => e )
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
try catch
promise
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
4 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Browser/OS:
Chrome 146 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=626903" width="100%" height="500px"></iframe>
try catch
603K/s
promise
403K/s
View exact numbers
Test name
Executions per second
✓
try catch
602,870 Ops/sec
promise
402,723 Ops/sec
Autogenerated LLM Summary
(model
gpt-4o-mini
, generated one year ago):
The benchmark titled "Promise vs Try Catch" investigates two distinct approaches for handling errors in JavaScript: traditional `try-catch` blocks and modern `Promises`. Each approach embodies specific characteristics that impact error handling efficiency and performance. ### Test Cases #### 1. Try Catch - **Code**: ```javascript let response; try { response = getData(); } catch(e) { response = e; } ``` - **Description**: This test case utilizes a `try-catch` statement to execute the `getData()` function, which throws an error. When the error occurs, it's caught within the `catch` block, allowing the code to handle the error gracefully. - **Performance Result**: Approximately 458,615.5 executions per second. ### Pros and Cons of Try Catch - **Pros**: - Simple and straightforward syntax for error handling. - Directly handles synchronous errors without the need for additional setup. - Readable, allowing easy understanding of the flow of code. - **Cons**: - Performance can degrade significantly when used frequently, particularly in scenarios involving many errors. - Less suitable for handling multiple asynchronous operations compared to Promises. #### 2. Promise - **Code**: ```javascript const promise = new Promise((resolve, reject) => { resolve(getData()); }).then( r => r, e => e ); ``` - **Description**: This test case implements a `Promise` to handle potential errors from the `getData()` function. If the operation is successful, it resolves; otherwise, it will handle the error in the `then` method. - **Performance Result**: Approximately 307,929.94 executions per second. ### Pros and Cons of Promise - **Pros**: - Well-suited for handling asynchronous operations, particularly in scenarios involving multiple operations or chained executions. - Provides a clean way to manage and organize code involving callbacks. - Encourages better separation of success and error handling. - **Cons**: - Slightly more complex syntax, requiring a foundational understanding of Promises. - Overhead of creating a new Promise object can lead to performance bottlenecks, particularly for simple synchronous operations. ### Conclusion and Alternatives In this benchmark, the `try-catch` mechanism significantly outperformed the `Promise` for error handling in synchronous contexts. The use of a `Promise` may still be preferable in scenarios involving asynchronous operations where callback hell could otherwise occur. **Other Alternatives**: - **Async/Await**: A newer syntax built on Promises that allows asynchronous code to be written in a more synchronous-looking manner, improving readability and maintainability. - **Callbacks**: The traditional way of handling asynchronous operations before Promises became popular, often leading to callback hell but still useful for simple applications. - **Error-First Callbacks**: A common pattern in Node.js where the first argument of a callback function is reserved for an error object. In summary, the choice between `try-catch` blocks and Promises (or other error-handling patterns) should consider the context of use, performance implications, and code clarity. Understanding these nuances can help developers make informed decisions based on their specific application needs.
Related benchmarks
Multipromise resulter
promise vs callback vs async
Try/catch vs .catch
try-catch vs return
return err vs throw err
creating new object vs changing fields
Comments
Confirm delete:
Do you really want to delete benchmark?