Ethereum: How to setState in react.js using “binance.futuresMiniTickerStream()” function

State Management with binance.futuresMiniTickerStream() in React.js

When you are building a web application that requires real-time data, using the Binance API to fetch market data and reactively update the UI becomes essential. One common approach is to use the React hook useState to manage state variables and update them based on asynchronous actions such as API calls.

In this article, we will explore how you can use the Binance Node.js library function binance.futuresMiniTickerStream() to create a real-time data stream in your React application.

Binance API and its streaming function

To use the binance.futuresMiniTickerStream() function, you must first install the required package:

npm install node-binance-api

`

Then, initialize the Binance API client in your React component. Here is an example:

import React, { useState, useEffect } from 'react';
import Binance from 'node-binance-api';
const Binance = require('node-binance-api');
// Initialize the Binance API client
async function initBinance() {
const binance = new Binance({
api_key: 'YOUR_BINANCE_API_KEY',
api_secret: 'YOUR_BINANCE_API_SECRET'
});
return binance;
}
const App = () => {
// Define variables to store stream data
const [data, setData] = useState([]);
const [error, setError] = useState(null);
// Function to fetch and update state with new data from Binance API
const fetchData = async () => {
try {
// Initialize Binance API client with initialization function
const binance = await initBinance();
// Use promise that resolves when stream is ready
const stream = await binance.futuresMiniTickerStream({
symbol: "BTCUSDT",
interval: "1m"
});
// Listen for new data and update state
stream.on('data', (tickers) => {
setData(tickers);
});
} catch (error) {
setError(error.message);
}
};
useEffect(() => {
fetchData();
}, []);
return (
{data.length > 0 && (
Current data: {JSON.stringify(data)}
)}
);
};

In this example:

• We define a function “fetchData”, which initializes the Binance API client, starts listening for data on the function “binance.futuresMiniTickerStream()” and updates the state with the new data.

• The hook “useEffect” is used to call the function “fetchData” when the component is attached.

How ​​it works

When you call the function “fetchData”, Binance creates a stream of pendulum objects in real time, which are then listened to using the method “stream.on(‘data’)”. When new data is received, the event handler updates the state with the new data.

This approach allows your React component to reactively update its UI as the Binance API stream provides live market data.

Tips and Variations

• To handle errors differently, you can add additional logic in the “on(data)” event handler or use a separate error handling function.

• If you need additional functionality, such as canceling streams or limiting updates to specific intervals, see the [Binance Node.js API documentation] (

By using Binance’s “binance.futuresMiniTickerStream()” function and reactively updating your React component with new data, you can create a robust real-time data streaming system for your application.