Learn Remix - 10 Code Examples & CST Typing Practice Test

Remix is a full-stack, server-first web framework that emphasizes web standards, progressive enhancement, nested routing, and seamless data loading using loaders and actions. It focuses on performance, accessibility, and delivering fast user experiences through native browser APIs.

View all 10 Remix code examples →

Remix Counter Component Remix Counter with Max Limit Remix Counter with Step Increment Remix Counter with Auto-Save Remix Counter with History Remix Counter with Dark Mode Toggle Only Remix Counter with Auto-Increment Remix Counter with Conditional Theme Remix Counter with Lambda Handlers Remix Full Featured Counter

Learn REMIX with Real Code Examples

Updated Nov 21, 2025

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Code Sample Descriptions

Remix Counter Component

import { useState, useEffect } from 'react';

export default function Counter() {
    const [count, setCount] = useState(0);
    const [isDark, setIsDark] = useState(false);

    useEffect(() => {
        const savedCount = localStorage.getItem('count');
        if (savedCount) setCount(parseInt(savedCount, 10));
    }, []);

    useEffect(() => {
        localStorage.setItem('count', count.toString());
    }, [count]);

    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <div>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
        <button onClick={() => setIsDark(!isDark)}>Switch to {isDark ? 'Light' : 'Dark'} Theme</button>
        </div>
    );
}

Demonstrates a simple counter component in Remix using React hooks with client-side interactivity.

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Remix Counter with Max Limit

import { useState } from 'react';

export default function MaxCounter({ max = 5 }) {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => count < max && setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Counter stops incrementing after reaching a specified maximum value.

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Remix Counter with Step Increment

import { useState } from 'react';

export default function StepCounter({ step = 2 }) {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + step)}>+</button>
        <button onClick={() => setCount(count - step)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Counter increments or decrements by a custom step value.

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Remix Counter with Auto-Save

import { useState, useEffect } from 'react';

export default function AutoSaveCounter() {
    const [count, setCount] = useState(0);
    useEffect(() => { localStorage.setItem('count', count.toString()); }, [count]);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Automatically saves the counter value to localStorage on every change.

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Remix Counter with History

import { useState } from 'react';

export default function HistoryCounter() {
    const [count, setCount] = useState(0);
    const [history, setHistory] = useState([]);
    const updateHistory = (action) => setHistory([...history, action]);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <div>History: {history.join(', ')}</div>
        <button onClick={() => { setCount(count + 1); updateHistory('Increment'); }}>+</button>
        <button onClick={() => { setCount(count - 1); updateHistory('Decrement'); }}>-</button>
        <button onClick={() => { setCount(0); updateHistory('Reset'); }}>Reset</button>
        </div>
    );
}

Tracks a history of all increment/decrement actions.

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Remix Counter with Dark Mode Toggle Only

import { useState } from 'react';

export default function DarkOnlyCounter() {
    const [isDark, setIsDark] = useState(false);
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: 0</h2>
        <button onClick={() => setIsDark(!isDark)}>Toggle Theme</button>
        </div>
    );
}

A static counter with only theme toggle functionality.

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Remix Counter with Auto-Increment

import { useState, useEffect } from 'react';

export default function AutoIncrementCounter() {
    const [count, setCount] = useState(0);
    useEffect(() => { const interval = setInterval(() => setCount(c => c + 1), 1000); return () => clearInterval(interval); }, []);
    return <h2>Counter: {count}</h2>;
}

Automatically increments the counter every second using useEffect.

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Remix Counter with Conditional Theme

import { useState } from 'react';

export default function ConditionalThemeCounter() {
    const [count, setCount] = useState(0);
    const isDark = count % 2 === 0;
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Automatically switches theme based on even/odd count.

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Remix Counter with Lambda Handlers

import { useState } from 'react';

export default function LambdaCounter() {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(c => c + 1)}>+</button>
        <button onClick={() => setCount(c => c - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Uses inline arrow functions for counter actions.

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Remix Full Featured Counter

import { useState, useEffect } from 'react';

export default function FullCounter({ step = 2 }) {
    const [count, setCount] = useState(0);
    const [history, setHistory] = useState([]);
    const [isDark, setIsDark] = useState(false);
    useEffect(() => { localStorage.setItem('count', count.toString()); }, [count]);
    useEffect(() => { const interval = setInterval(() => { setCount(c => { setHistory(h => [...h, 'Auto increment']); return c + step; }); }, 1000); return () => clearInterval(interval); }, []);
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <div>History: {history.join(', ')}</div>
        <button onClick={() => { setCount(count + step); setHistory([...history, 'Increment']); }}>+</button>
        <button onClick={() => { setCount(count - step); setHistory([...history, 'Decrement']); }}>-</button>
        <button onClick={() => { setCount(0); setHistory([...history, 'Reset']); }}>Reset</button>
        <button onClick={() => setIsDark(!isDark)}>Toggle Theme</button>
        </div>
    );
}

Combines step increment, history, auto-save, auto-increment, and theme toggle.

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Frequently Asked Questions about Remix

What is Remix?

What are the primary use cases for Remix?

Full-stack web apps. E-commerce storefronts. Dynamic server-rendered applications. Highly interactive sites with forms. Apps requiring nested routing and data inheritance

What are the strengths of Remix?

Deeply optimized for performance & speed. Minimal client-side JavaScript. Excellent for SEO. Built-in progressive enhancement. Best-in-class routing model

What are the limitations of Remix?

Not ideal for static-only sites. Smaller ecosystem than Next.js. More opinionated routing model. Harder migration from fully SPA architectures. Requires understanding browser-native APIs

How can I practice Remix typing speed?

CodeSpeedTest offers 10+ real Remix code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Remix Counter Component

import { useState, useEffect } from 'react';

export default function Counter() {
    const [count, setCount] = useState(0);
    const [isDark, setIsDark] = useState(false);

    useEffect(() => {
        const savedCount = localStorage.getItem('count');
        if (savedCount) setCount(parseInt(savedCount, 10));
    }, []);

    useEffect(() => {
        localStorage.setItem('count', count.toString());
    }, [count]);

    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <div>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
        <button onClick={() => setIsDark(!isDark)}>Switch to {isDark ? 'Light' : 'Dark'} Theme</button>
        </div>
    );
}

Demonstrates a simple counter component in Remix using React hooks with client-side interactivity.

Let’s Try →

Remix Counter with Max Limit

import { useState } from 'react';

export default function MaxCounter({ max = 5 }) {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => count < max && setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Counter stops incrementing after reaching a specified maximum value.

Let’s Try →

Remix Counter with Step Increment

import { useState } from 'react';

export default function StepCounter({ step = 2 }) {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + step)}>+</button>
        <button onClick={() => setCount(count - step)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Counter increments or decrements by a custom step value.

Let’s Try →

Remix Counter with Auto-Save

import { useState, useEffect } from 'react';

export default function AutoSaveCounter() {
    const [count, setCount] = useState(0);
    useEffect(() => { localStorage.setItem('count', count.toString()); }, [count]);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Automatically saves the counter value to localStorage on every change.

Let’s Try →

Remix Counter with History

import { useState } from 'react';

export default function HistoryCounter() {
    const [count, setCount] = useState(0);
    const [history, setHistory] = useState([]);
    const updateHistory = (action) => setHistory([...history, action]);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <div>History: {history.join(', ')}</div>
        <button onClick={() => { setCount(count + 1); updateHistory('Increment'); }}>+</button>
        <button onClick={() => { setCount(count - 1); updateHistory('Decrement'); }}>-</button>
        <button onClick={() => { setCount(0); updateHistory('Reset'); }}>Reset</button>
        </div>
    );
}

Tracks a history of all increment/decrement actions.

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Remix Counter with Dark Mode Toggle Only

import { useState } from 'react';

export default function DarkOnlyCounter() {
    const [isDark, setIsDark] = useState(false);
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: 0</h2>
        <button onClick={() => setIsDark(!isDark)}>Toggle Theme</button>
        </div>
    );
}

A static counter with only theme toggle functionality.

Let’s Try →

Remix Counter with Auto-Increment

import { useState, useEffect } from 'react';

export default function AutoIncrementCounter() {
    const [count, setCount] = useState(0);
    useEffect(() => { const interval = setInterval(() => setCount(c => c + 1), 1000); return () => clearInterval(interval); }, []);
    return <h2>Counter: {count}</h2>;
}

Automatically increments the counter every second using useEffect.

Let’s Try →

Remix Counter with Conditional Theme

import { useState } from 'react';

export default function ConditionalThemeCounter() {
    const [count, setCount] = useState(0);
    const isDark = count % 2 === 0;
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(count + 1)}>+</button>
        <button onClick={() => setCount(count - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Automatically switches theme based on even/odd count.

Let’s Try →

Remix Counter with Lambda Handlers

import { useState } from 'react';

export default function LambdaCounter() {
    const [count, setCount] = useState(0);
    return (
        <div>
        <h2>Counter: {count}</h2>
        <button onClick={() => setCount(c => c + 1)}>+</button>
        <button onClick={() => setCount(c => c - 1)}>-</button>
        <button onClick={() => setCount(0)}>Reset</button>
        </div>
    );
}

Uses inline arrow functions for counter actions.

Let’s Try →

Remix Full Featured Counter

import { useState, useEffect } from 'react';

export default function FullCounter({ step = 2 }) {
    const [count, setCount] = useState(0);
    const [history, setHistory] = useState([]);
    const [isDark, setIsDark] = useState(false);
    useEffect(() => { localStorage.setItem('count', count.toString()); }, [count]);
    useEffect(() => { const interval = setInterval(() => { setCount(c => { setHistory(h => [...h, 'Auto increment']); return c + step; }); }, 1000); return () => clearInterval(interval); }, []);
    return (
        <div className={isDark ? 'dark-theme' : 'light-theme'}>
        <h2>Counter: {count}</h2>
        <div>History: {history.join(', ')}</div>
        <button onClick={() => { setCount(count + step); setHistory([...history, 'Increment']); }}>+</button>
        <button onClick={() => { setCount(count - step); setHistory([...history, 'Decrement']); }}>-</button>
        <button onClick={() => { setCount(0); setHistory([...history, 'Reset']); }}>Reset</button>
        <button onClick={() => setIsDark(!isDark)}>Toggle Theme</button>
        </div>
    );
}

Combines step increment, history, auto-save, auto-increment, and theme toggle.

Let’s Try →

Frequently Asked Questions about Remix

What is Remix?

What are the primary use cases for Remix?

Full-stack web apps. E-commerce storefronts. Dynamic server-rendered applications. Highly interactive sites with forms. Apps requiring nested routing and data inheritance

What are the strengths of Remix?

Deeply optimized for performance & speed. Minimal client-side JavaScript. Excellent for SEO. Built-in progressive enhancement. Best-in-class routing model

What are the limitations of Remix?

Not ideal for static-only sites. Smaller ecosystem than Next.js. More opinionated routing model. Harder migration from fully SPA architectures. Requires understanding browser-native APIs

How can I practice Remix typing speed?

CodeSpeedTest offers 10+ real Remix code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.