如何使用angularjs / javascript将HTML表导出到Excel

Question

我已经写了下面的代码来下载文件。 它正在为有限的记录工作。 现在我的记录数超过12000。然后它挂起了浏览器，文件未下载

var ua = window.navigator.userAgent;
var msie = ua.indexOf("MSIE ");
var edgetype = ua.indexOf("Edge");
var blobObject;
if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./)) {
    expExcelIframe.document.open("txt/html", "replace");
    expExcelIframe.document.write(html);
    expExcelIframe.document.close();
    expExcelIframe.focus();
    expExcelIframe.document.execCommand("SaveAs", true, fileName);
}
else if (edgetype > 0) {
    blobObject = new Blob([html]);
    window.navigator.msSaveOrOpenBlob(blobObject, fileName);
}
else {
    window.open('data:application/vnd.ms-excel,' + encodeURIComponent(html));
}

Answer 1

替换encodeURIComponent ：

慢

 window.open('data:application/vnd.ms-excel,' + encodeURIComponent(html)); 

更好

var blob = new Blob([html],{type: 'data:application/vnd.ms-excel' });
var u = URL.createObjectURL(blob);
window.open(u);

这避免了转换为base64所需的占用大量内存和计算资源的步骤。