Javascript - total pages number pdf with PDF.js?

Question

How do I get the total page count with pdf.js?

<script type="text/javascript">
$( document ).ready(function() {
  var pdf = pdfjs.getDocument('test.pdf');
  alert(pdf.numPages);
});
</script>

Answer 1

I don't know much about pdfjs but you can try this:

<script type="text/javascript">
$( document ).ready(function() {
    pdfjs.getDocument('test.pdf').then(function(pdf){
        alert(pdf.numPages);
    });
});
</script>