Benchmark: React useCallback, useMemo vs inline filter

HTML Preparation code:

<!doctype html>
<html>
  <head>
    <title>This is the title of the webpage!</title>
  </head>
  <body>
  	<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>
	<div id="root"></div> 
  </body>
</html>

Script Preparation code:

var KEYWORDS = "the quick brown fox jumped over the lazy dog".split(' ');

function ComponentUseCallback({
    keywords
}) {
    const items = React.useCallback(() => {
        return keywords.filter((v) => !!v);
    }, [keywords]);

    return React.createElement('div', {}, items().join(','));
}

function ComponentUseMemo({
    keywords
}) {
    const items = React.useMemo(() => {
        return keywords.filter((v) => !!v);
    }, [keywords]);

    return React.createElement('div', {}, items.join(','));
}


function ComponentUseInline({
    keywords
}) {
    const items = keywords.filter((v) => !!v);

    return React.createElement('div', {}, items.join(','));
}

Tests:

ComponentUseCallback
ReactDOM.render(React.createElement(ComponentUseCallback, { keywords: KEYWORDS }), document.getElementById('root'))
ComponentUseMemo
ReactDOM.render(React.createElement(ComponentUseMemo, { keywords: KEYWORDS }), document.getElementById('root'))
ComponentUseInline
ReactDOM.render(React.createElement(ComponentUseInline, { keywords: KEYWORDS }), document.getElementById('root'))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
ComponentUseCallback
ComponentUseMemo
ComponentUseInline

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript benchmarks!

The provided JSON represents a benchmark test for React components, specifically comparing three different approaches: `useCallback`, `useMemo`, and inline filtering.

**What is tested?**

In this benchmark, we're testing the performance of three React components that filter an array of keywords. The components are created using the `ComponentUseCallback`, `ComponentUseMemo`, and `ComponentUseInline` functions.

* `ComponentUseCallback` uses the `React.useCallback` hook to memoize a function that filters the keywords.
* `ComponentUseMemo` uses the `React.useMemo` hook to memoize a value that filters the keywords.
* `ComponentUseInline` uses a simple inline filter to achieve the same result.

**Options compared**

The benchmark compares the performance of these three approaches:

1. **useCallback**: This approach uses a function created with `React.useCallback` as a memoized value. The function is recreated whenever the dependencies change (in this case, the `keywords` array).
2. **useMemo**: This approach uses a value computed with `React.useMemo` as a memoized value. The value is recomputed whenever any of its dependencies change.
3. **Inline filter**: This approach uses a simple inline filter to achieve the same result as the other two approaches.

**Pros and cons of each approach**

* **useCallback**:
	+ Pros: Can be useful when you need to create a memoized function that depends on external state.
	+ Cons: Creates a new function on every render, which can lead to performance issues if the dependencies change frequently.
* **useMemo**:
	+ Pros: Reuses the computed value whenever it's needed, which can improve performance.
	+ Cons: Can cause unnecessary re-renders of components that depend on memoized values.
* **Inline filter**:
	+ Pros: Simple and easy to understand.
	+ Cons: May not be as efficient as the other two approaches, especially for large datasets.

**Other considerations**

When working with React, it's essential to consider the following:

* **Optimization**: React components should strive to minimize unnecessary re-renders. This can often be achieved by using memoized values or optimizing dependencies.
* **Performance**: The benchmark is running on a desktop browser (Chrome 114) and measuring executions per second. It's crucial to test performance in different environments, such as mobile devices and older browsers.

**Library used**

In this benchmark, React is used as the library for creating components and managing state. `React.createElement` is used to create virtual DOM elements, which are then rendered by `ReactDOM.render`.

**Special JS feature or syntax**

The benchmark uses a few modern JavaScript features:

* **Arrow functions**: Used in the `ComponentUseCallback` and `ComponentUseMemo` functions.
* **Template literals**: Used in the `KEYWORDS` variable.

Overall, this benchmark provides a useful insight into the performance differences between three common React optimization techniques.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
ComponentUseCallback	820182.7 Ops/sec
ComponentUseMemo	818287.0 Ops/sec
ComponentUseInline	859132.2 Ops/sec

Related benchmarks:

React useCallback, useMemo vs inline filter (version: 1)

Comparing performance of: ComponentUseCallback vs ComponentUseMemo vs ComponentUseInline

Created: one year ago by: Registered User

Jump to the latest result

ComponentUseCallback

ComponentUseMemo

ComponentUseInline

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):