问导出excel的函数

EN

function exportGrid(tableid,filename) {
     var table= document.getElementById(tableid);
     $("table tr td:last-child").replaceWith("");
     var html = table.outerHTML;
     var a = document.createElement('a');
    a.id = 'ExcelDL';
    a.href = 'data:application/vnd.ms-excel,' + escape(html);
    a.download = filename + ".xls";
    document.body.appendChild(a);
    a.click(); 
    // location.reload();
    // document.getElementById('ExcelDL').remove();
    }