function exportCSV() {
var rows = document.querySelectorAll('#whResultBody tr');
var ths = document.querySelectorAll('.wh-result-table thead th');
var headers = Array.from(ths).map(function(th) { return th.textContent.trim(); });
var data = [headers];
rows.forEach(function(row) {
var cells = row.querySelectorAll('td');
var vals = Array.from(cells).map(function(c) { return c.textContent.trim(); });
data.push(vals);
});
var ws = XLSX.utils.aoa_to_sheet(data);
ws['!cols'] = data[0].map(function() { return {wch:14}; });
var wb = XLSX.utils.book_new();
XLSX.utils.book_append_sheet(wb, ws, '预测结果');
XLSX.writeFile(wb, 'forecast.xlsx');
}
function exportPNG() {
alert('图片导出功能即将上线，敬请期待！');
} }