var ffileDeletePages = function (e) {
const file_reader = new FileReader();
file_reader.onload = (event) => {
/*string, include number pages with interval: "7, 20, 22, 30-32, 33, 36-40, 46"*/
const numPages = "1-3";
/*array, array of number pages*/
/*const numPages = [1,3];*/
/*number, number page*/
/*const numPages = 1;*/
/*delete 1-3 pages a PDF-file and save the "ResultOptimize.pdf"*/
const json = AsposePdfDeletePages(event.target.result, e.target.files[0].name, "ResultDeletePages.pdf", numPages);
if (json.errorCode == 0) document.getElementById('output').textContent = json.fileNameResult;
else document.getElementById('output').textContent = json.errorText;
/*make a link to download the result file*/
DownloadFile(json.fileNameResult, "application/pdf");
};
file_reader.readAsArrayBuffer(e.target.files[0]);
};