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.

${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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