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<!DOCTYPE html>
<html>
<head>
    <title>15 Advanced JavaScript Tips That Level Up Your Code (2026)</title>
    <style>
        body { font-family: system-ui; max-width: 800px; margin: 40px auto; padding: 20px; }
        h1 { color: #333; }
        .tip { background: #f5f5f5; padding: 15px; margin: 15px 0; border-radius: 5px; }
        code { background: #fff3cd; padding: 2px 6px; }
    </style>
</head>
<body>
    <h1>15 Advanced JavaScript Tips</h1>

    <div class="tip">
        <h3>1. Destructuring Assignment</h3>
        <p>Instead of: <code>const name = obj.name;</code></p>
        <p>Use: <code>const { name } = obj;</code></p>
    </div>

    <div class="tip">
        <h3>2. Optional Chaining</h3>
        <p><code>obj?.prop?.nested?.value</code> safely accesses nested properties.</p>
    </div>

    <div class="tip">
        <h3>3. Nullish Coalescing</h3>
        <p><code>value ?? defaultValue</code> replaces || for null/undefined checks.</p>
    </div>

    <p style="margin-top: 40px;">Master these and your code will be cleaner.</p>
</body>
</html>