let CSV = document.getElementById('csv');
let button = document.getElementById('btn');
CSV.addEventListener('change', (event) => {
const file = event.target.files[0];
const reader = new FileReader();
reader.onload = (e) => {
const content = e.target.result;
const rows = content.split('\n')
.map(row => row.split(','));
const table =
document.getElementById('table');
table.innerHTML = '';
for (let i = 0; i < rows.length; i++) {
let tr = document.createElement('tr');
for (let j = 0; j < rows[i].length; j++) {
let td = document.createElement('td');
td.textContent = rows[i][j];
tr.appendChild(td);}
table.appendChild(tr);}
CSV.style.display = 'none';
button.style.display = 'block';};
reader.readAsText(file);
});
button.addEventListener('click', () => {
const rows = document.querySelectorAll('#table tr');
let csvContent = '';
for (let i = 0; i < rows.length; i++) {
let row = rows[i];
let cols = row.querySelectorAll('td');
let rowContent = '';
for (let j = 0; j < cols.length; j++) {
let col = cols[j];
rowContent += col.textContent + ',';}
csvContent += rowContent.slice(0, -1) + '\n';}
const blob = new Blob([csvContent],
{ type: 'text/csv' });
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = 'exported_data.csv';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
window.URL.revokeObjectURL(url);
});