how to fetch API in react.js

Fetching APIs in React.js can be done using various methods. One of the most common approaches is to use the built-in fetch API or libraries like Axios. Here's how you can fetch an API in React.js using both methods:

Using fetch API:

import React, { useState, useEffect } from 'react';

function App() {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await fetch('https://api.example.com/data');
        const jsonData = await response.json();
        setData(jsonData);
      } catch (error) {
        console.error('Error fetching data:', error);
      }
    };

    fetchData();
  }, []); // Empty dependency array means it will run only once on component mount

  return (
    <div>
      {data ? (
        <div>
          {/* Render your fetched data here */}
        </div>
      ) : (
        <p>Loading...</p>
      )}
    </div>
  );
}

export default App;

Using Axios:

First, install Axios using npm or yarn:

npm install axios

Then, you can use Axios in your React component:

import React, { useState, useEffect } from 'react';
import axios from 'axios';

function App() {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await axios.get('https://api.example.com/data');
        setData(response.data);
      } catch (error) {
        console.error('Error fetching data:', error);
      }
    };

    fetchData();
  }, []); // Empty dependency array means it will run only once on component mount

  return (
    <div>
      {data ? (
        <div>
          {/* Render your fetched data here */}
        </div>
      ) : (
        <p>Loading...</p>
      )}
    </div>
  );
}

export default App;

Both methods achieve the same result. You fetch data from an API endpoint and update the component's state with the fetched data. The useEffect hook is used with an empty dependency array to ensure that the API call is made only once when the component mounts.

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