JavaScriptでカンマ区切りCSVとタブ区切りテキストの双方をパース - Qiita

const table = document.querySelector('table'); const input = document.querySelector('[name="filechoose"]'); const reader = new FileReader(); const make_col = (label, tag) => { const col = document.createElement(tag); if (label !== null) col.innerHTML = label.replace('\n', '<br />').replace('\x22\x22', '\x22'); return col; } const make_row = (line, tag) => { const tr = document.createElement('tr');