Date: ${dateObj.toDateString()}

Moon Phase: ${phaseName}

`; document.getElementById('resultOutput').innerHTML = resultHTML; openTab('resultTab'); } window.calculateMoonPhase = calculateMoonPhase; function downloadPDF() { const resultDiv = document.getElementById('resultOutput'); if (!resultDiv || !resultDiv.innerText.trim()) { alert("Please calculate the moon phase first."); return; } const doc = new jsPDF(); doc.setFontSize(18); doc.text('Moon Phase Result', 14, 20); doc.setFontSize(12); const lines = resultDiv.innerText.split('\n'); let y = 35; lines.forEach(line => { if (line.trim()) { doc.text(line.trim(), 14, y); y += 10; } }); doc.save('Moon_Phase_Result.pdf'); } window.downloadPDF = downloadPDF; });