var options = { bookmarks: false, enableShare: true, showButtons: 0, //0: no buttons; 1: ok button, 2: ok and cancel button cancel: "Cancel", //text for cancel button ok: "OK" //text for ok button }; PDFReader.open(fileURL, options, function() {}, function() {}); var PDFReaderClosed = function() { //fired after click on done or cancel button PDFReader.clearCache(fileURL); document.removeEventListener('PDFReaderClosed', PDFReaderClosed); document.removeEventListener('PDFReaderButtonOK', PDFReaderButtonOK); }; document.addEventListener('PDFReaderClosed', PDFReaderClosed); var PDFReaderButtonOK = function() { //fired after click on OK Button document.removeEventListener('PDFReaderClosed', PDFReaderClosed); document.removeEventListener('PDFReaderButtonOK', PDFReaderButtonOK); }; document.addEventListener('PDFReaderButtonOK', PDFReaderButtonOK);