一、引入Sheetjs或者npm直接下载

<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-0.20.3/package/dist/xlsx.full.min.js"></script>

二、页面中使用

//json导出为excel
<button onclick="exportExcel()">导出</button><script>const exportExcel = () => {const data = [{ name: 'John', age: 30, city: 'New York' },{ name: 'Anna', age: 22, city: 'London' }];const fields = ['name', 'age', 'city'];var workbook = XLSX.utils.book_new();const worksheet = XLSX.utils.json_to_sheet(data, { header: fields });XLSX.utils.book_append_sheet(workbook, worksheet, 'Sheet1');XLSX.writeFile(workbook, 'data.xlsx');}</script>
//表格table转成excel
//result 是table的idconst wb = XLSX.utils.table_to_book(document.getElementById('result'))XLSX.writeFile(wb, 'location.xlsx')