Webleb - UI Elements - Wayback Machine Time Converter HTML

HTML CSS JS

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Wayback Machine Time Converter</title>
    <style>
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: #f4f4f9;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .converter-card {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 500px;
        }
        h1 {
            font-size: 1.5rem;
            color: #333;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .field {
            margin-bottom: 1rem;
        }
        label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #666;
        }
        input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            box-sizing: border-box;
            font-family: monospace;
        }
        .button-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-top: 1rem;
        }
        button {
            padding: 0.75rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.2s;
        }
        .btn-primary { background-color: #007bff; color: white; }
        .btn-primary:hover { background-color: #0056b3; }
        .btn-secondary { background-color: #6c757d; color: white; }
        .btn-secondary:hover { background-color: #5a6268; }
        #result-link {
            margin-top: 1.5rem;
            padding: 1rem;
            background: #e9ecef;
            border-radius: 4px;
            word-break: break-all;
            font-size: 0.9rem;
            display: none;
        }
        a { color: #007bff; text-decoration: none; }
        a:hover { text-decoration: underline; }
    </style>
</head>
<body>

<div class="converter-card">
    <h1>Wayback Time Converter</h1>
    
    <div class="field">
        <label>Target URL</label>
        <input type="text" id="targetUrl" placeholder="https://example.com" value="https://google.com">
    </div>

<div class="field">
        <label>Human Readable Date (Local)</label>
        <input type="datetime-local" id="humanDate">
    </div>

<div class="field">
        <label>Wayback Timestamp (YYYYMMDDhhmmss)</label>
        <input type="text" id="wbTimestamp" placeholder="20230101120000">
    </div>

<div class="button-group">
        <button class="btn-primary" onclick="convertToWayback()">Date to Timestamp</button>
        <button class="btn-secondary" onclick="convertFromWayback()">Timestamp to Date</button>
    </div>

<div id="result-link">
        <strong>Wayback URL:</strong><br>
        <a id="finalUrl" target="_blank" href="#"></a>
    </div>
</div>

// Set default date to now
    window.onload = () => {
        const now = new Date();
        now.setMinutes(now.getMinutes() - now.getTimezoneOffset());
        humanDateInput.value = now.toISOString().slice(0, 16);
    };

function formatToWB(date) {
        const pad = (n) => n.toString().padStart(2, '0');
        return date.getUTCFullYear() +
               pad(date.getUTCMonth() + 1) +
               pad(date.getUTCDate()) +
               pad(date.getUTCHours()) +
               pad(date.getUTCMinutes()) +
               pad(date.getUTCSeconds());
    }

function convertToWayback() {
        const date = new Date(humanDateInput.value);
        if (isNaN(date.getTime())) return alert("Invalid Date");
        
        const ts = formatToWB(date);
        wbTimestampInput.value = ts;
        updateLink(ts);
    }

function convertFromWayback() {
        const ts = wbTimestampInput.value.trim();
        if (ts.length < 8) return alert("Timestamp too short");

const year = ts.substring(0, 4);
        const month = ts.substring(4, 6) - 1 || 0;
        const day = ts.substring(6, 8) || 1;
        const hour = ts.substring(8, 10) || 0;
        const min = ts.substring(10, 12) || 0;
        const sec = ts.substring(12, 14) || 0;

const date = new Date(Date.UTC(year, month, day, hour, min, sec));
        
        // Adjust for local display in datetime-local input
        const localDate = new Date(date.getTime() - (date.getTimezoneOffset() * 60000));
        humanDateInput.value = localDate.toISOString().slice(0, 16);
        updateLink(ts);
    }

</body>
</html>

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