paulnamalomba.github.io/debug-overflow.html at main · paulnamalomba/paulnamalomba.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Mobile Debug - Overflow Detector</title>
    <style>
        body {
            font-family: sans-serif;
            padding: 1rem;
            max-width: 100%;
        }
        .panel {
            background: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 1rem;
            margin-bottom: 1rem;
        }
        .panel h3 { margin-bottom: 0.5rem; color: #333; }
        iframe {
            width: 100%;
            height: 700px;
            border: 2px solid #0077B5;
            border-radius: 4px;
        }
        .controls {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }
        button {
            padding: 8px 16px;
            border: 1px solid #ccc;
            background: #fff;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        button:hover { background: #f0f0f0; }
        button.active { background: #0077B5; color: #fff; border-color: #0077B5; }
        #overflow-results {
            max-height: 400px;
            overflow-y: auto;
            font-family: monospace;
            font-size: 13px;
            white-space: pre-wrap;
        }
        .offender { color: #d63384; font-weight: bold; }
        .ok { color: green; }
    </style>
</head>
<body>
    <h1>📱 Mobile Overflow Debugger</h1>
    <p>This page loads your site in an iframe at various mobile widths and detects which elements overflow the viewport.</p>

    <div class="panel">
        <h3>Device Presets</h3>
        <div class="controls">
            <button onclick="setWidth(320)">iPhone SE (320px)</button>
            <button onclick="setWidth(375)">iPhone 12 (375px)</button>
            <button onclick="setWidth(390)">iPhone 14 (390px)</button>
            <button onclick="setWidth(412)">Galaxy S21 (412px)</button>
            <button onclick="setWidth(768)">iPad (768px)</button>
            <button onclick="setWidth(1024)">iPad Pro (1024px)</button>
        </div>
        <p>Current width: <strong id="current-width">375px</strong></p>
    </div>

    <div class="panel">
        <h3>🔍 Scan for Overflowing Elements</h3>
        <button onclick="scanOverflow()" style="background:#0077B5; color:#fff; margin-bottom:0.5rem;">
            Run Overflow Scan
        </button>
        <div id="overflow-results">Click "Run Overflow Scan" after selecting a device width...</div>
    </div>

    <div class="panel">
        <h3>Preview</h3>
        <iframe id="preview" src="index.html"></iframe>
    </div>

    <script>
        const iframe = document.getElementById('preview');
        const widthLabel = document.getElementById('current-width');
        const results = document.getElementById('overflow-results');

        function setWidth(w) {
            iframe.style.width = w + 'px';
            widthLabel.textContent = w + 'px';
            // Update active button
            document.querySelectorAll('.controls button').forEach(b => {
                b.classList.toggle('active', b.textContent.includes(w + 'px'));
            });
        }

        function scanOverflow() {
            try {
                const doc = iframe.contentDocument || iframe.contentWindow.document;
                const viewportWidth = iframe.clientWidth;
                const allElements = doc.querySelectorAll('*');
                let offenders = [];

                allElements.forEach(el => {
                    const rect = el.getBoundingClientRect();
                    if (rect.right > viewportWidth + 1) {
                        const overflow = Math.round(rect.right - viewportWidth);
                        const tag = el.tagName.toLowerCase();
                        const id = el.id ? `#${el.id}` : '';
                        const cls = el.className && typeof el.className === 'string'
                            ? '.' + el.className.split(' ').join('.')
                            : '';
                        offenders.push({
                            selector: `${tag}${id}${cls}`,
                            overflow: overflow,
                            width: Math.round(rect.width),
                            text: (el.textContent || '').substring(0, 60).trim()
                        });
                    }
                });

                if (offenders.length === 0) {
                    results.innerHTML = '<span class="ok">✅ No overflowing elements found at ' + viewportWidth + 'px!</span>';
                } else {
                    // De-duplicate and sort by overflow amount
                    const unique = [];
                    const seen = new Set();
                    offenders.sort((a, b) => b.overflow - a.overflow);
                    offenders.forEach(o => {
                        const key = o.selector;
                        if (!seen.has(key)) {
                            seen.add(key);
                            unique.push(o);
                        }
                    });

                    let html = `<span class="offender">⚠️ ${unique.length} overflowing element(s) at ${viewportWidth}px:</span>\n\n`;
                    unique.forEach((o, i) => {
                        html += `<span class="offender">${i + 1}. ${o.selector}</span>\n`;
                        html += `   Overflows by: ${o.overflow}px  (element width: ${o.width}px)\n`;
                        if (o.text) html += `   Text: "${o.text.substring(0, 50)}..."\n`;
                        html += '\n';
                    });
                    results.innerHTML = html;
                }
            } catch (e) {
                results.innerHTML = 'Error: ' + e.message;
            }
        }

        // Default to iPhone 12
        setWidth(375);
    </script>
</body>
</html>