Benchmark: React Hooks vs. Inline, useMemo, memo 3

HTML Preparation code:

<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>

Script Preparation code:

function ComponentWithInlineFunction() {
    const clickMe = () => {
    }
    return React.createElement('button', {
        onClick: clickMe
    }, 'Click me!')
}

function ComponentWithUseCallback() {
    const clickMe = React.useCallback(() => {
    }, [])
    return React.createElement('button', {
        onClick: clickMe
    }, 'Click me!')
}

function ComponentWithoutUseMemo() {
    const obj = {
        x: 1,
        y: 1
    }
    return React.createElement('h1', {
        data: obj
    }, 'ComponentWithoutUseMemo')
}

function ComponentWithUseMemo() {
    const obj = React.useMemo(() => ({
        x: 1,
        y: 1
    }), [])
    return React.createElement('h1', {
        data: obj
    }, 'ComponentWithUseMemo')
}

const ChildWithoutMemo = () => {
    return React.createElement('div', null, null)
}

const ChildWithMemo = React.memo(ChildWithoutMemo)

function ComponentWithoutMemorizedChild() {
    const [count, setCount] = React.useState(0)
    React.useEffect(() => {
        if (count < 10000) {
            setCount(c => c + 1)
        }
    })
    return React.createElement(ChildWithoutMemo, null, null)
}

function ComponentWithMemorizedChild() {
    const [count, setCount] = React.useState(0)
    React.useEffect(() => {
        if (count < 10000) {
            setCount(c => c + 1)
        }
    })
    return React.createElement(ChildWithMemo, null, null)
}

Tests:

Inline Function
ReactDOM.render(React.createElement(ComponentWithInlineFunction), document.getElementById('root'))
Hooks
ReactDOM.render(React.createElement(ComponentWithUseCallback), document.getElementById('root'))
Without useMemo
ReactDOM.render(React.createElement(ComponentWithoutUseMemo), document.getElementById('root'))
With useMemo
ReactDOM.render(React.createElement(ComponentWithUseMemo), document.getElementById('root'))
Child without memo
ReactDOM.render(React.createElement(ComponentWithoutMemorizedChild), document.getElementById('root'))
Child with memo
ReactDOM.render(React.createElement(ComponentWithMemorizedChild), document.getElementById('root'))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Inline Function
Hooks
Without useMemo
With useMemo
Child without memo
Child with memo

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
Inline Function	415913.5 Ops/sec
Hooks	514671.5 Ops/sec
Without useMemo	264508.4 Ops/sec
With useMemo	512767.3 Ops/sec
Child without memo	290595.8 Ops/sec
Child with memo	314925.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares four approaches to optimize React components:

1. Inline function (using `const clickMe = () => { ... }`)
2. Hooks (using `React.useCallback`)
3. Without `useMemo` (using a simple object as state)
4. With `useMemo` (using the `useMemo` hook to memoize a complex object)

**Options Compared**

The benchmark tests the performance of each approach under different conditions:

* Inline function vs. Hooks
* Without `useMemo` vs. With `useMemo`
* Child component optimization: without memoization vs. with memoization

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

1. **Inline Function**: Pros - simple, easy to understand; Cons - can lead to tight coupling between components, harder to maintain.
2. **Hooks**: Pros - easier to manage state, side effects, and lifecycle methods; Cons - can be less efficient than traditional state management approaches.
3. **Without `useMemo`**: Pros - no additional dependency array required; Cons - can lead to unnecessary re-renders, slower performance.
4. **With `useMemo`**: Pros - optimizes computationally expensive operations; Cons - requires manual management of dependencies.

**Library and Purpose**

The benchmark uses React, a popular JavaScript library for building user interfaces. The `useCallback`, `useMemo`, and `React.memo` hooks are used to implement the different optimization approaches.

* **`useCallback`**: A hook that memoizes a function, so it's only recreated when its dependencies change.
* **`useMemo`**: A hook that memoizes a value, so it's only recalculated when its dependencies change.
* **`React.memo`**: A higher-order component that memoizes a component, so it's only re-rendered when its props change.

**Special JS Feature or Syntax**

The benchmark uses React-specific features and syntax, such as:

* `useCallback`
* `useMemo`
* `React.memo`

No other special JavaScript features or syntax are used in this benchmark.

I hope this explanation helps you understand the benchmark!

Related benchmarks:

React Hooks vs. Inline, useMemo, memo 3 (version: 0)

Comparing performance of: Inline Function vs Hooks vs Without useMemo vs With useMemo vs Child without memo vs Child with memo

Created: 7 months ago by: Guest

Jump to the latest result

Inline Function

Hooks

Without useMemo

With useMemo

Child without memo

Child with memo

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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