我动态地将行添加到 html 表中，并且想使用 SheetJs 将表内容保存到 xlsx 文件中。生成的文件是空的。当以这种方式添加表格内容时，是否可以在这种情况下做到这一点？我还尝试在创建 xlsx 文件之前添加行。
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-2.1.4.js"
integrity="sha256-siFczlgw4jULnUICcdm9gjQPZkw/YPDqhQ9+nAOScE4=" crossorigin="anonymous"></script>
<script type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/amcharts/3.21.15/plugins/export/libs/FileSaver.js/FileSaver.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.15.6/xlsx.full.min.js"></script>
<style>
table,
td {
border: 1px solid black;
}
</style>
</head>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.10.3/xlsx.full.min.js">
</script>
<p>Click the button to add a new row at the first position of the
table and then add cells and content</p>
<table id="myTable">
<TR>
</TR>
</table>
<button type="button" id="first" onclick="First('myTable')">Principal</button>
<button id="button-a">Create Excel</button>
<script>
function First(tableID) {
let table = document.getElementById(tableID)
table.innerHTML …