แยกไฟล์ผ่าน JavaScript via C++

    var ffileSplit = function (e) {
        const file_reader = new FileReader();
        file_reader.onload = (event) => {
        /*set number a page to split*/
        const pageToSplit = 1;
        /*split a PDF-file and save the "ResultSplit1.pdf", "ResultSplit2.pdf"*/
        const json = AsposePdfSplit2Files(event.target.result, e.target.files[0].name, pageToSplit, "ResultSplit1.pdf", "ResultSplit2.pdf");
        if (json.errorCode == 0) document.getElementById('output').textContent = e.target.files[0].name + " split: " + json.fileNameResult1 + ", " + json.fileNameResult2;
        else document.getElementById('output').textContent = json.errorText;
        /*make a link to download the first result file*/
        DownloadFile(json.fileNameResult1, "application/pdf");
        /*make a link to download the second result file*/
        DownloadFile(json.fileNameResult2, "application/pdf");
        };
        file_reader.readAsArrayBuffer(e.target.files[0]);
    };