Node.js Requires Chilkat v11.7.0+

PDF Footnotes in Markdown: Inline, at the End, or Dropped

See more PDF Text Extraction Examples

Demonstrates the "footnotes" option of the "markdown" operation. Small-print notes at the foot of a page are kept where they are ("inline", the default), gathered at the end of the document ("end"), or left out ("none"). Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  The two-page PDF used in this example is available at footnotes.pdf

    var pdf = new chilkat.Pdf();
    success = pdf.LoadFile("qa_data/pdf/footnotes.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    var json = new chilkat.JsonObject();
    var jsonOut = new chilkat.JsonObject();

    //  Page 1 has two superscript references in the text and the two notes in small print at its foot;
    //  page 2 has a third.
    success = pdf.ExtractText("markdown",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("---- footnotes: inline (default) ----");
    console.log(jsonOut.StringOf("markdown"));

    json.UpdateString("footnotes","end");
    success = pdf.ExtractText("markdown",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("---- footnotes: end ----");
    console.log(jsonOut.StringOf("markdown"));

    json.UpdateString("footnotes","none");
    success = pdf.ExtractText("markdown",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("---- footnotes: none ----");
    console.log(jsonOut.StringOf("markdown"));

    //  Sample output:

    //  ---- footnotes: inline (default) ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  1 The county maritime museum, which holds three lenses from decommissioned lights. 2 The loan is renewable and carries no fee; the society insures the lens.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.
    //  
    //  3 Counted at the entrance by the volunteers on duty.
    //  
    //  ---- footnotes: end ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.
    //  
    //  1 The county maritime museum, which holds three lenses from decommissioned lights. 2 The loan is renewable and carries no fee; the society insures the lens.
    //  
    //  3 Counted at the entrance by the volunteers on duty.
    //  
    //  ---- footnotes: none ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.

}

chilkatExample();