Learn-JavaScript/11. Arrays.html at main · Sandeep6135/Learn-JavaScript · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>JS Array Basics</title>
    <style>
        body {
            font-family: system-ui;
            padding: 20px;
            line-height: 1.5;
        }

        button {
            padding: 10px 20px;
            cursor: pointer;
        }

        .array-container {
            margin-top: 20px;
            border: 1px solid #ccc;
            padding: 15px;
            border-radius: 8px;
        }

        code {
            background: #eee;
            padding: 2px 4px;
            border-radius: 4px;
        }
    </style>
</head>

<body>

    <h2>JavaScript Array Explorer</h2>
    <button onclick="renderArray()">Update Output</button>

    <div id="output" class="array-container">
        Click the button to visualize the array!
    </div>

    <script>
        function renderArray() {
            // 1. Defining the array
            const fruits = ["Apple", "Banana", "Mango", "Grapes"];
            const display = document.getElementById("output");

            // 2. Using Template Literals (Backticks ``) for cleaner HTML generation
            // 3. Using .map() is more "Modern JS" than a standard for-loop
            const listItems = fruits.map((fruit, index) => {
                return `<li>Index <code>[${index}]</code> holds the value: <strong>${fruit}</strong></li>`;
            }).join('');

            display.innerHTML = `
                <p><strong>Array Length:</strong> ${fruits.length}</p>
                <ul>${listItems}</ul>
                <p><em>Pro tip: Arrays in JS start at index 0!</em></p>
            `;
        }
    </script>

</body>

</html>