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React 17 useCallback
(version: 0)
Comparing performance of:
ComponentWithUseCallback vs Component
Created:
3 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<html> <body> <div id="root"></div> <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script> <script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script> </body> </html
Script Preparation code:
function ComponentWithUseCallback() { const handleClick = React.useCallback((event) => event.preventDefault()); return React.createElement('button', { onClick: handleClick }, 'btn'); } function Component() { const handleClick = (event) => event.preventDefault(); return React.createElement('button', { onClick: handleClick }, 'btn'); }
Tests:
ComponentWithUseCallback
ReactDOM.render(ComponentWithUseCallback, document.getElementById('root'));
Component
ReactDOM.render(Component, document.getElementById('root'));
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
ComponentWithUseCallback
Component
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
10 months ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0
Browser/OS:
Firefox 138 on Linux
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Embed Benchmark Result
Test name
Executions per second
ComponentWithUseCallback
29358.9 Ops/sec
Component
28167.2 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Benchmark Overview** The provided benchmark measures the performance difference between two React components: `ComponentWithUseCallback` and `Component`. Both components render a simple button that prevents default form submission when clicked. **Options Compared** The benchmark compares two approaches: 1. **React 17's `useCallback`**: This hook memoizes the `handleClick` function, which is only recreated when the component mounts or updates. 2. **Plain JavaScript function**: The `handleClick` function is defined as a plain JavaScript function that takes an event object as an argument. **Pros and Cons of Each Approach** 1. **React 17's `useCallback`**: * Pros: Reduces unnecessary re-renders of the component, improves performance. * Cons: Introduces additional complexity due to the use of memoization, may not be suitable for all scenarios where function updates are not expected. 2. **Plain JavaScript function**: * Pros: Simple and lightweight, no dependencies on React or its APIs. * Cons: May lead to unnecessary re-renders of the component if the `handleClick` function is updated more frequently than necessary. **Library Used** The benchmark uses the following libraries: 1. **React**: A JavaScript library for building user interfaces. 2. **ReactDOM**: A companion library for React that provides DOM-related functionality. 3. **Chrome**: The browser used to execute the benchmark. **Special JS Feature or Syntax (None)** There are no special JavaScript features or syntax used in this benchmark. **Other Considerations** When choosing between these two approaches, consider the following factors: 1. **Component lifecycle**: If the component is likely to be re-rendered frequently, using `useCallback` might help reduce unnecessary re-renders. 2. **Function update frequency**: If the `handleClick` function needs to be updated often, a plain JavaScript function might be more suitable. **Alternative Approaches** Other approaches you could explore for similar use cases include: 1. **Using a closure**: Instead of using `useCallback`, you could define `handleClick` as a closure that takes an event object as an argument. 2. **Using a caching library**: If the component needs to cache frequently updated values, consider using a caching library like LRU Cache or Redis. 3. **Optimizing React components**: Explore other React optimization techniques, such as using `shouldComponentUpdate` or optimizing render logic. Keep in mind that the best approach will depend on your specific use case and requirements.
Related benchmarks:
React useCallback
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Test: React useCallback vs notUseCallback
React17: React useCallback vs notUseCallback
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