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Tutorial
javascript

AJAX with JavaScript: A Practical Guide 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>POST Request with Fetch</title>
</head>
<body>
    <form id="postDataForm">
        <input type="text" id="title" placeholder="Enter title" required>
        <input type="text" id="body" placeholder="Enter body" required>
        <button type="submit">Submit</button>
    </form>
    <div id="postDataOutput"></div>

    <script>
        document.getElementById('postDataForm').addEventListener('submit', function(e) {
            e.preventDefault();

            const title = document.getElementById('title').value;
            const body = document.getElementById('body').value;

            fetch('https://jsonplaceholder.typicode.com/posts', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    title: title,
                    body: body
                })
            })
            .then(response => response.json())
            .then(data => {
                document.getElementById('postDataOutput').innerHTML = `
                    <h3>Data Submitted:</h3>
                    <p>Title: ${data.title}</p>
                    <p>Body: ${data.body}</p>
                `;
            })
            .catch(error => console.error('Error:', error));
        });
    </script>
</body>
</html>
  • The form is submitted without a page reload by preventing the default form submission behavior.
  • We send a POST request to the API using fetch(), including the form data as JSON in the request body.
  • The server's response is displayed on the page.

Sep 18, 2024
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Tutorial
javascript

Asynchronous JavaScript: A Beginner's Guide 

const promise = new Promise((resolve, reject) => {
    setTimeout(() => {
        reject("Error fetching data");
    }, 2000);
});

promise
    .then((message) => {
        console.log(message);
    })
    .catch((error) => {
        console.error(error);
    });
Error fetching data

Aug 30, 2024
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