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Fetch Api Development Tutorials, Guides & Insights

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JavaScript in Modern Web Development

Tutorial December 10, 2024
javascript

  • With Node.js, JavaScript powers the back-end to handle databases, APIs, and server logic.
  • Examples: REST APIs, real-time collaboration tools like Google Docs.

JavaScript isn't limited to the browser anymore. It's being used in diverse domains:

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AJAX with JavaScript: A Practical Guide

Tutorial September 18, 2024
javascript 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>AJAX with XMLHttpRequest</title>
</head>
<body>
    <button id="fetchDataBtn">Fetch Data</button>
    <div id="dataOutput"></div>

    <script>
        document.getElementById('fetchDataBtn').addEventListener('click', function() {
            var xhr = new XMLHttpRequest();
            xhr.open('GET', 'https://jsonplaceholder.typicode.com/posts/1', true);

            xhr.onload = function() {
                if (this.status === 200) {
                    var data = JSON.parse(this.responseText);
                    document.getElementById('dataOutput').innerHTML = `
                        <h3>${data.title}</h3>
                        <p>${data.body}</p>
                    `;
                }
            };

            xhr.onerror = function() {
                console.error('Request failed.');
            };

            xhr.send();
        });
    </script>
</body>
</html>

In this example:

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React Custom Hook for API Requests

Code August 12, 2024
javascript 

import { useState, useEffect } from 'react';

function useFetch(url, options = {}) {
    const [data, setData] = useState(null);
    const [loading, setLoading] = useState(true);
    const [error, setError] = useState(null);

    useEffect(() => {
        let isMounted = true; // Track if component is mounted

        const fetchData = async () => {
            setLoading(true);
            try {
                const response = await fetch(url, options);
                if (!response.ok) {
                    throw new Error('Network response was not ok');
                }
                const result = await response.json();
                if (isMounted) {
                    setData(result);
                }
            } catch (error) {
                if (isMounted) {
                    setError(error);
                }
            } finally {
                if (isMounted) {
                    setLoading(false);
                }
            }
        };

        fetchData();

        return () => {
            isMounted = false; // Cleanup to avoid setting state on unmounted component
        };
    }, [url, options]);

    return { data, loading, error };
}

export default useFetch;

Here’s an example of how to use the useFetch hook in a React component to fetch and display data.

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JavaScript Code Snippet: Fetch and Display Data from an API

Code August 04, 2024
javascript json

No preview available for this content.

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Fetch JSON Data from API in JavaScript

Code January 26, 2024
javascript 

// Fetch JSON data from an API using the Fetch API
fetch('https://jsonplaceholder.typicode.com/posts/1')
    .then(response => response.json())
    .then(data => console.log(data))
    .catch(error => console.error(error));

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