AsposePdfSplit2Files

Split to two PDF-files.

function AsposePdfSplit2Files(
    fileBlob,
    fileName,
    pageToSplit,
    fileNameResult1,
    fileNameResult2 
)

Parameters:

• fileBlob Blob object
• fileName file name
• pageToSplit number page for split
• fileNameResult1 result file name #1
• fileNameResult2 result file name #2

Return:

JSON object

• errorCode - code error (0 no error)
• errorText - text error ("" no error)
• fileNameResult1 - result file name #1
• fileNameResult2 - result file name #2

Web Worker example:

  /*Create Web Worker*/
  const AsposePDFWebWorker = new Worker("AsposePDFforJS.js");
  AsposePDFWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
  AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent = 
    (evt.data == 'ready') ? 'loaded!' :
      (evt.data.json.errorCode == 0) ?
        `Result:\n${DownloadFile(evt.data.json.fileNameResult1, "application/pdf", evt.data.params[0])}
                \n${DownloadFile(evt.data.json.fileNameResult2, "application/pdf", evt.data.params[1])}` :
        `Error: ${evt.data.json.errorText}`;

  /*Event handler*/
  const ffileSplit = e => {
    const file_reader = new FileReader();
    file_reader.onload = event => {
      /*Set number a page to split*/
      const pageToSplit = 1;
      /*Split to two PDF-files and save the "ResultSplit1.pdf", "ResultSplit2.pdf" - Ask Web Worker*/
      AsposePDFWebWorker.postMessage(
        { "operation": 'AsposePdfSplit2Files',
          "params": [event.target.result, e.target.files[0].name, pageToSplit, "ResultSplit1.pdf", "ResultSplit2.pdf"] },
        [event.target.result]
      );
    };
    file_reader.readAsArrayBuffer(e.target.files[0]);
  };

  /*Make a link to download the result file*/
  const DownloadFile = (filename, mime, content) => {
      mime = mime || "application/octet-stream";
      var link = document.createElement("a"); 
      link.href = URL.createObjectURL(new Blob([content], {type: mime}));
      link.download = filename;
      link.innerHTML = "Click here to download the file " + filename;
      document.body.appendChild(link); 
      document.body.appendChild(document.createElement("br"));
      return filename;
    }

Simple example:

  var ffileSplit = function (e) {
    const file_reader = new FileReader();
    file_reader.onload = (event) => {
      /*Set number a page to split*/
      const pageToSplit = 1;
      /*Split to two PDF-files 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]);
  };