a标签下载html表格`let aTag = document.createElement("a"); var html

let aTag = document.createElement("a");
var html = "<html><head><meta charset='UTF-8'></head><body>"+document.getElementById("表格的id").outerHTML+"</body></html>"; 
var blob = new Blob([html],{type:"application/vnd.ms-excel"});
aTag.setAttribute("href", URL.createObjectURL(blob)); 
aTag.setAttribute("download",'download'); 
aTag.setAttribute("target", "_blank"); 
aTag.download = '表格的名字.xls' 
aTag.click();