Use Stefan Walther's method, and it works.
add div in html file
<button id="cmdExport" style="display:none;">
Export data
</button>
<div id="QV01" style="position: absolute; top: 50px; left: 20px; width: 200px; height: 200px;" class="qvobject"></div>
add callback function in .js file
require( ["js/qlik", "jquery"], function ( qlik, $ ) {
qlik.setOnError( function ( error ) {
alert( error.message );
} );
var app = qlik.openApp('Executive Dashboard.qvf', config);
app.getObject('QV01','NaKQwM').then( function( vizModel ) {
// Prevent clicking on the button too early
$('#cmdExport').show();
$('#cmdExport').on('click', function() {
vizModel.exportData().then(function( reply ) {
console.log('qUrl', reply);
window.open(reply.result.qUrl);
});
})
});
} );
The link:
How to include "Export data" feature in a mashup
