Google Algorithm Update Checker

Google Algorithm Update Checker

Track and analyze simulated search algorithm updates.

to

Volatility Index

Update Timeline

Select an update from the timeline to see details.

No updates in this date range.

'; return; } data.forEach(update => { const color = update.type === 'Core' ? 'bg-red-500' : 'bg-blue-500'; const item = document.createElement('div'); item.className = `timeline-item relative border-l-4 pl-8 py-4 cursor-pointer ${update.id === selectedUpdateId ? 'active' : ''}`; item.dataset.id = update.id; item.innerHTML = `

${new Date(update.date).toLocaleDateString(undefined, { year: 'numeric', month: 'long', day: 'numeric' })}

${update.name}

${update.type}

`; container.appendChild(item); }); } function renderVolatilityChart(data) { const ctx = document.getElementById('volatilityChart').getContext('2d'); if(volatilityChart) volatilityChart.destroy(); const chartData = data.map(u => ({ x: u.date, y: u.volatility })).sort((a,b) => new Date(a.x) - new Date(b.x)); volatilityChart = new Chart(ctx, { type: 'line', data: { datasets: [{ label: 'Volatility Score', data: chartData, borderColor: '#ef4444', backgroundColor: 'rgba(239, 68, 68, 0.1)', fill: true, tension: 0.1 }]}, options: { responsive: true, maintainAspectRatio: false, scales: { x: { type: 'time', time: { unit: 'day' } }, y: { beginAtZero: true, max: 10 } } } }); } function renderDetails(id) { const container = document.getElementById('details-panel'); const update = updateData.find(u => u.id === id); if(!update) { container.innerHTML = `

Select an update from the timeline to see details.

`; return; } container.innerHTML = `

${update.name}

${new Date(update.date).toLocaleDateString(undefined, { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' })}

Type

${update.type}

Volatility

${update.volatility}

Description

${update.description}

`; } async function generatePdf() { const startDate = new Date(document.getElementById('startDate').value); const endDate = new Date(document.getElementById('endDate').value); const filteredData = updateData.filter(u => new Date(u.date) >= startDate && new Date(u.date) <= endDate); document.getElementById('pdf-date-range').textContent = `${startDate.toLocaleDateString()} to ${endDate.toLocaleDateString()}`; document.getElementById('pdf-kpis').innerHTML = document.getElementById('kpi-cards').innerHTML; let detailsHtml = filteredData.map(u => `

${u.name} (${u.date})

Type: ${u.type} | Volatility: ${u.volatility}

${u.description}

`).join(''); document.getElementById('pdf-details-container').innerHTML = detailsHtml; const reportEl = document.getElementById('pdf-report'); reportEl.classList.remove('hidden'); const canvas = await html2canvas(reportEl, { scale: 2 }); reportEl.classList.add('hidden'); const imgData = canvas.toDataURL('image/png'); const { jsPDF } = window.jspdf; const pdf = new jsPDF({ orientation: 'p', unit: 'in', format: 'letter' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = (canvas.height * pdfWidth) / canvas.width; pdf.addImage(imgData, 'PNG', 0, 0, pdfWidth, pdfHeight); pdf.save('Algorithm-Update-Report.pdf'); } function initialize() { const today = new Date('2025-09-30'); const ninetyDaysAgo = new Date(new Date().setDate(today.getDate() - 90)); document.getElementById('endDate').value = today.toISOString().split('T')[0]; document.getElementById('startDate').value = ninetyDaysAgo.toISOString().split('T')[0]; document.getElementById('startDate').addEventListener('change', updateDashboard); document.getElementById('endDate').addEventListener('change', updateDashboard); document.getElementById('timeline-container').addEventListener('click', e => { const item = e.target.closest('.timeline-item'); if(item) { selectedUpdateId = parseInt(item.dataset.id); document.querySelectorAll('.timeline-item').forEach(el => el.classList.remove('active')); item.classList.add('active'); renderDetails(selectedUpdateId); } }); document.getElementById('downloadPdfBtn').addEventListener('click', generatePdf); updateDashboard(); } initialize(); });
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