Benchmark: React const vs function 2024 fork

HTML Preparation code:

<script crossorigin src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
<div id="dest"></div>

Script Preparation code:

var ArrowFn = ({toWhat}) => React.createElement('div', null, `Hello ${toWhat}`);
function RegularFn ({toWhat}) { return React.createElement('div', null, `Hello ${toWhat}`); }

Tests:

ArrowFn
ReactDOM.render( React.createElement(ArrowFn, {toWhat: 'Worldd'}, null), document.getElementById('dest') );
RegularFn
ReactDOM.render( React.createElement(RegularFn, {toWhat: 'Worldd'}, null), document.getElementById('dest') );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
ArrowFn
RegularFn

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
ArrowFn	293185.1 Ops/sec
RegularFn	287283.7 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is being tested.

**Benchmark Definition**

The benchmark definition consists of two parts:

1. **Script Preparation Code**: This section defines two functions, `ArrowFn` and `RegularFn`, which are intended to be used as React components. Both functions create a React element with the text "Hello Worldd". The purpose of these functions is to demonstrate the difference in performance between using arrow functions (`.()` syntax) versus traditional function declarations (`function()` syntax).
2. **Html Preparation Code**: This section includes HTML code that sets up a basic React environment, including importing React and React DOM from external sources.

**Individual Test Cases**

The benchmark definition contains two individual test cases:

1. **ArrowFn**: This test case uses the `ArrowFn` function as the React component, passing an object with the key "toWhat" set to "Worldd".
2. **RegularFn**: This test case uses the `RegularFn` function as the React component, passing an object with the same key-value pair as before.

**Comparison of Approaches**

The two approaches being compared are:

* Using arrow functions (`.()` syntax)
* Using traditional function declarations (`function()` syntax)

Both approaches create a React element with the same text content. The difference lies in how the functions are defined.

**Pros and Cons:**

**Arrow Functions:**

Pros:

* More concise and expressive
* Less verbose code

Cons:

* Can be less readable for complex logic or performance-critical applications
* May lead to slower execution due to function overhead (although this is negligible for simple cases like React)

**Traditional Function Declarations:**

Pros:

* Easier to understand and maintain, especially for more complex logic
* Faster execution due to reduced function overhead

Cons:

* More verbose code
* Can be less expressive than arrow functions

**Library:**

The test case uses the React library, which is a JavaScript library for building user interfaces. React is used to manage the state and layout of components in web applications.

In this benchmark, we are only concerned with how the performance differences between arrow functions and traditional function declarations affect the execution time of React components.

**Special JS Feature:**

The test case uses modern JavaScript features, specifically:

* Arrow functions (`.()` syntax)
* ES6 imports (used to import React and React DOM from external sources)

These features are widely supported in modern browsers and are commonly used in web development.

Related benchmarks:

React const vs function 2024 fork (version: 0)

Comparing performance of: ArrowFn vs RegularFn

Created: 2 years ago by: Guest

Jump to the latest result

ArrowFn

RegularFn

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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