Axios Development Tutorials, Guides & Insights

You can also query ERC-20 token balances for a given address using the Etherscan API.

const axios = require('axios');

// Replace this with your actual Etherscan API key
const apiKey = 'YOUR_ETHERSCAN_API_KEY';

// Replace this with the Ethereum address you want to query
const address = '0xYourEthereumAddress';

// Replace this with the contract address of the ERC-20 token
const contractAddress = '0xYourTokenContractAddress';

// Etherscan API URL to fetch the ERC-20 token balance
const url = `https://api.etherscan.io/api?module=account&action=tokenbalance&contractaddress=${contractAddress}&address=${address}&tag=latest&apikey=${apiKey}`;

async function getTokenBalance() {
  try {
    // Make the API request to Etherscan
    const response = await axios.get(url);
    const tokenBalance = response.data.result;

    // Log the token balance (Note: Token balances are often in very small denominations)
    console.log(`Token Balance: ${tokenBalance}`);
  } catch (error) {
    console.error('Error fetching token balance:', error);
  }
}

// Call the function to get the token balance
getTokenBalance();

Visit http://127.0.0.1:5000/ in your browser. You should see:

{"message": "Welcome to the Task Manager API!"}

If you're making multiple requests to the same base URL or with the same configuration, you can create an Axios instance.

const apiClient = axios.create({
  baseURL: 'https://jsonplaceholder.typicode.com',
  timeout: 1000,
  headers: { 'X-Custom-Header': 'foobar' }
});

apiClient.get('/posts/1')
  .then(response => {
    console.log('Post:', response.data);
  });

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Install Tailwind CSS and its peer dependencies:

npm install -D tailwindcss postcss autoprefixer