PDFJS Customizing Viewer.html JS Event Handler
<script>
// add this script block to viewer.html (pdfjs/web/viewer.html)
document.addEventListener('DOMContentLoaded', function() {
console.log('DOMContentLoaded');
}, true);
document.addEventListener('webviewerloaded', function(e) {
console.log('webviewerloaded');
});
</script>
Old Knight