Create radio button using jsPDF

I am using jsPdf to generate a pdf on a client side , the documentation is really confusing me. I want to insert a radio button on the pdf. On the official docs there is AcroFormRadioButton Class, that list the constructor and Function Members of this classes, i am not able to create a new object using the constructor on the Documentation. i found a code that can create a new radio button, but i didn't understand it :

      var doc =  new jsPDF('p', 'pt', [ 595.28,  841.89])
      doc.setFontSize(10);
      doc.text(87.03635, 24.691223, 'Original');
      var radioGroup = new RadioButton();
      radioGroup.V = "/Test";
      radioGroup.Subtype = "Form";
      doc.addField(radioGroup);
      var radioButton1 = radioGroup.createOption("Test");
      radioButton1.Rect = [87.0363, 24.691223, 20, 20];
      radioButton1.AS = "/Test";
      radioGroup.setAppearance(AcroForm.Appearance.RadioButton.Circle);
      doc.save('Test.pdf');

on the offical docs i cant found RadioButton() constructor and the methods used to create the radiobutton, i looked on source code of jsPDF, but same issue.

Where i should look on the documentation/source of jsPdf, to understand this code.

Solution

This demo site is super helpful - http://raw.githack.com/MrRio/jsPDF/master/

In the dropdown, select AcroForms and it runs through a quick and dirty setup for each form element.

Here's the short version:

/* global jsPDF */
var doc = new jsPDF();
var {
  RadioButton,
  Appearance
} = jsPDF.AcroForm;


doc.text("RadioGroup:", 50, 165);
var radioGroup = new RadioButton();
radioGroup.value = "Test";
radioGroup.Subtype = "Form";

doc.addField(radioGroup);

var radioButton1 = radioGroup.createOption("Test");
radioButton1.Rect = [50, 170, 30, 10];
radioButton1.AS = "/Test";

var radioButton2 = radioGroup.createOption("Test2");
radioButton2.Rect = [50, 180, 30, 10];

var radioButton3 = radioGroup.createOption("Test3");
radioButton3.Rect = [50, 190, 20, 10];

radioGroup.setAppearance(Appearance.RadioButton.Cross);

I needed to alter the imports and use of constructors a bit:

// import
const jsPDF = require('jspdf');
const doc = jsPDF('p', 'pt'); 

// then using the radio button constructor
var radioGroup = new doc.AcroFormRadioButton();

// and using 'appearance'
radioGroup.setAppearance(doc.AcroFormAppearance.RadioButton.Cross);

Hope that helps.