مشکل در کد گرفتن API

یک وب پیج درست کردم که از یک لینک دارای ۱۰۰۰ و خورده ای API اون هارو بگیره و ۵۰ تا ۵۰ تا در یک جدول نشون بده و بعد از هر رفرش ۵۰ تای بعدی رو نشون بده و میخام براساس category فیلتر بشه اما فیلترم کار نمیکنه.
کد html:


<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>API table</title>
</head>
<body>
    <div id="filter-container">
        <label for="category-filter">Categories:</label>
        <select id="category-filter">
            <option value="all">All</option>
            <!-- Add other category options here -->
        </select>
        <button id="filter-button">Filter</button>
        <button id="refresh-button">Refresh</button>
    </div>
    <table id="api-table">
        <thead id="table-head"></thead>
        <tbody id="api-list"></tbody>
    </table>
    <script src="script.js"></script>
</body>
</html>

کد css:

body {
    margin: 0;
    padding: 0;
}

#filter-container {
    position: sticky;
    top: 0;
    background-color: #f1f1f1;
    padding: 10px;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#category-filter {
    padding: 5px;
}

#api-table-container {
    max-height: 500px; /* Adjust this value based on your needs */
    overflow-y: auto;
    position: relative;
}

#api-table {
    width: 100%;
    border-collapse: collapse;
}

#api-table th,
#api-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

#table-head {
    position: -webkit-sticky; /* For Safari */
    position: sticky;
    top: 0;
    background-color: #f1f1f1;
    z-index: 100;
}

کد جاوااسکریپت:

document.addEventListener('DOMContentLoaded', function () {
    const apiUrl = 'https://api.publicapis.org/entries';
    const apiListContainer = document.getElementById('api-list');
    const categoryFilter = document.getElementById('category-filter');
    const tableHead = document.getElementById('table-head');
    const filterButton = document.getElementById('filter-button');
    const refreshButton = document.getElementById('refresh-button');
    const apiTableContainer = document.getElementById('api-table-container');

    let apiData = [];
    let filteredData = [];
    let startIndex = 0;
    const itemsPerPage = 50;

    function fetchData(startIndex, endIndex) {
        return fetch(apiUrl)
            .then(response => response.json())
            .then(data => {
                console.log('API Data:', data);
                apiData = data.entries;
                filteredData = apiData.slice(startIndex, endIndex);
                console.log('Filtered Data:', filteredData);
                return filteredData;
            })
            .catch(error => {
                console.error('Error fetching data:', error);
                return [];
            });
    }

    function displayData(data) {
        console.log('Displaying Data:', data);
        apiListContainer.innerHTML = '';
        data.forEach((api, index) => {
            const row = document.createElement('tr');
            const numberCell = document.createElement('td');
            numberCell.textContent = startIndex + index + 1;
            row.appendChild(numberCell);

            for (const key in api) {
                if (api.hasOwnProperty(key)) {
                    const cell = document.createElement('td');
                    cell.textContent = api[key];
                    row.appendChild(cell);
                }
            }
            apiListContainer.appendChild(row);
        });
    }

    function populateCategories(data) {
        const categories = [
            "Animals", "Anime", "Anti-malware", "Art & Design", "Authentication & Authorization",
            "Blockchain", "Books", "Business", "Calendar", "Cloud storage & File sharing",
            "Continuous Integration", "Cryptocurrency", "Currency Exchange", "Data Validation",
            "Development", "Dictionaries", "Documents & Productivity", "Email", "Entertainment",
            "Environment", "Events", "Finance", "Food & Drink", "Games & Comics", "Geocoding",
            "Government", "Health", "Jobs", "Machine Learning", "*****", "News", "Open Data",
            "Open Source Projects", "Patent", "Personality", "Phone", "Photography", "Programming",
            "Science & Math", "Security", "Shopping", "Social", "Sports & Fitness", "Text Data",
            "Text Analysis", "Tracking", "Transportation", "URL Shorteners", "Vehicle", "Video",
            "Weather"
        ];

        categories.forEach(category => {
            const option = document.createElement('option');
            option.value = category;
            option.textContent = category;
            categoryFilter.appendChild(option);
        });
    }

    function refreshData() {
        fetchData(startIndex, startIndex + itemsPerPage)
            .then(newData => {
                startIndex += itemsPerPage;
                displayData(newData);
                window.scrollTo(0, 55); // Scroll to the top of the page with an offset
            });
    }

    function applyFilter() {
        const selectedCategory = categoryFilter.value;
        filteredData = apiData.filter(api => selectedCategory === 'all' || api.category === selectedCategory);
        startIndex = 0; // Reset startIndex when applying a filter
        displayData(filteredData);
    }

    filterButton.addEventListener('click', applyFilter);
    refreshButton.addEventListener('click', refreshData);

    window.addEventListener('resize', function () {
        displayData(filteredData.slice(startIndex, startIndex + itemsPerPage));
    });

    fetch(apiUrl)
        .then(response => response.json())
        .then(data => {
            console.log('Initial Data:', data.entries);
            if (data.entries.length > 0) {
                const firstEntry = data.entries[0];
                const numberTh = document.createElement('th');
                numberTh.textContent = 'Number';
                tableHead.appendChild(numberTh);

                for (const key in firstEntry) {
                    if (firstEntry.hasOwnProperty(key)) {
                        const th = document.createElement('th');
                        th.textContent = key;
                        tableHead.appendChild(th);
                    }
                }
            }
            fetchData(0, itemsPerPage)
                .then(initialData => {
                    displayData(initialData);
                    populateCategories(data.entries);
                });
        })
        .catch(error => console.error('Error fetching initial data:', error));

    window.addEventListener('scroll', function () {
        const scrollPosition = window.scrollY;
        tableHead.style.position = scrollPosition > 55 ? 'fixed' : 'static';
        tableHead.style.top = '0';
    });
});

</body></html>

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مشکل در کد گرفتن API

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