FileSaver.js saveAs(Xlsx) - angularjs

Question

I am using filesaver.js to export my div (with multiple tables) to excel. I am able to export it as XLS using the code below.
var blob = new Blob([document.getElementById('exportable').innerHTML], {
type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8"
});
saveAs(blob, "Test Report using FileSaver.xls");
However, I want to export my div to XLSX. Can anyone help? I have tried changing the MIME type to XLSX, but didn't help.

Answer 1

Update
W3C does not implemented .xlsx so the browsers too. But you can use alsql a js library which export data as a valid .xlsx here is the jsfiddle or run below code
function myCtrl($scope) {
$scope.exportData = function () {
alasql('SELECT * INTO XLSX("Report.xlsx",{headers:true}) FROM ?',[$scope.items]);
};
$scope.items = [{
name: "John Smith",
email: "j.smith#example.com",
dob: "1985-10-10"
}, {
name: "Jane Smith",
email: "jane.smith#example.com",
dob: "1988-12-22"
}, {
name: "Jan Smith",
email: "jan.smith#example.com",
dob: "2010-01-02"
}, {
name: "Jake Smith",
email: "jake.smith#exmaple.com",
dob: "2009-03-21"
}, {
name: "Josh Smith",
email: "josh#example.com",
dob: "2011-12-12"
}, {
name: "Jessie Smith",
email: "jess#example.com",
dob: "2004-10-12"
}];
};
<script src="https://cdn.jsdelivr.net/alasql/0.3.6/alasql.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.7.2/xlsx.core.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app>
<div ng-controller="myCtrl">
<button ng-click="exportData()">Export</button>
<br />
<div id="exportable">
<table width="100%">
<thead>
<tr>
<th>Name</th>
<th>Email</th>
<th>DoB</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in items">
<td>{{item.name}}</td>
<td>{{item.email}}</td>
<td>{{item.dob | date:'MM/dd/yy'}}</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>