Cryptocurrency Application Built with React JavaScript
**Building a Cryptocurrency App in ReactJS**
Are you interested in developing a cryptocurrency app that lists all available cryptocurrencies, displays their current prices, market caps, and available supplies, and allows users to search for individual coins? Look no further! Here's a step-by-step guide to building such an app using ReactJS.
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### Prerequisites
To build this project, you'll need:
- Basic knowledge of ReactJS, including components, state, props, hooks (useState, useEffect). - Familiarity with API consumption using fetch or axios. - Node.js and npm installed for setting up the React development environment. - Understanding of routing in React (e.g., React Router) if you want multiple views. - An API endpoint providing cryptocurrency data with price, market cap, supply, etc., and currency conversion support (e.g., CoinGecko API, CoinMarketCap API). - Optional: Experience with state management libraries if app complexity grows, but can be done with React state/hooks.
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### Step-by-step Guide
#### 1. **Set up ReactJS project**
Use create-react-app to scaffold your React application:
```bash npx create-react-app crypto-app cd crypto-app npm start ```
#### 2. **Install dependencies**
For making HTTP requests and handling routing:
```bash npm install axios react-router-dom ```
You can also install React Icons for UI enhancements if needed.
#### 3. **Choose and configure the Cryptocurrency API**
- Use **CoinGecko API** (free and comprehensive): - For listing cryptocurrencies with their current price, market cap, and supply. - Supports currency conversion including INR. - Example endpoint to get coins data: `/coins/markets` with parameters like `vs_currency=inr` for prices in INR.
#### 4. **Create React components**
- **App component**: Main container. - **CoinList component**: Fetches and displays a list of cryptocurrencies. - **Search component**: Input field to filter coins by name or symbol. - **CoinDetail component** (optional): To show additional details on selected coin. - **CurrencyConverter component**: To convert values if needed, can be integrated with API support.
#### 5. **Fetching and displaying coin data**
- Use `useEffect` hook to fetch data from API on component mount. - Store coin data in state using `useState`. - Display coin list showing: name, current price, market cap, available supply. - Implement search function to filter the displayed list in real-time based on user input.
Example fetch snippet:
```javascript import axios from 'axios'; import { useState, useEffect } from 'react';
function CoinList() { const [coins, setCoins] = useState([]); const [searchTerm, setSearchTerm] = useState("");
useEffect(() => { axios.get('https://api.coingecko.com/api/v3/coins/markets', { params: { vs_currency: 'inr', order: 'market_cap_desc', per_page: 100, page: 1, sparkline: false } }) .then(response => setCoins(response.data)) .catch(error => console.error(error)); }, []);
const filteredCoins = coins.filter(coin => coin.name.toLowerCase().includes(searchTerm.toLowerCase()) || coin.symbol.toLowerCase().includes(searchTerm.toLowerCase()) );
return ( <> setSearchTerm(e.target.value)} />
- {filteredCoins.map(coin => (
- ))}
{coin.name} ({coin.symbol.toUpperCase()})
Price: ₹{coin.current_price}Market Cap: ₹{coin.market_cap.toLocaleString()}Available Supply: {coin.circulating_supply.toLocaleString()}
> ); } ```
#### 6. **Currency conversion to INR**
- Since CoinGecko supports querying prices in INR (using the `vs_currency=inr` parameter), prices will automatically be in INR. - If you want to convert between different currencies manually, fetch current conversion rates from the API and perform calculations in React.
#### 7. **Adding styling and routing**
- Use CSS or UI libraries like Material UI or TailwindCSS to style your app nicely. - Implement routing (optional) using `react-router-dom` for better user experience if you want multiple views.
#### 8. **Testing and deploying**
- Test your app thoroughly in different environments. - Deploy your React app using platforms like Vercel, Netlify, or GitHub Pages.
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### Summary Table
| Feature | Implementation Detail | |---------------------------------|-------------------------------------| | Project setup | `create-react-app` | | API for cryptocurrency data | CoinGecko API (`coins/markets` endpoint) with `vs_currency=inr` | | Display coins list | Fetch data in `useEffect`, store in state, map data to UI | | Show price, market cap, supply | Extract these fields from API response and display | | Search coins by name/symbol | Input with `useState`, filter coins array | | Currency conversion | Use API parameter `vs_currency=inr` to get INR prices | | Optional routing | `react-router-dom` for multi-page navigation |
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This approach provides a **complete, maintainable React app** to list cryptocurrencies with live price in INR, search capability, and market info by leveraging free APIs and React hooks effectively.
If you want, I can help you build a starter codebase or guide further on advanced features like real-time price updates or wallet connection. Just ask!
In this cryptocurrency app, you can utilize technology such as a trie data structure to aid in efficient search loading times for users seeking individual coins. Additionally, lean on existing APIs like CoinGecko to demonstrate how ReactJS integrates with technology to deliver a seamless user experience.
