Tables

var docDefinition = {
  content: [
    {
      layout: 'lightHorizontalLines', // optional
      table: {
        // headers are automatically repeated if the table spans over multiple pages
        // you can declare how many rows should be treated as headers
        headerRows: 1,
        widths: [ '*', 'auto', 100, '*' ],

        body: [
          [ 'First', 'Second', 'Third', 'The last one' ],
          [ 'Value 1', 'Value 2', 'Value 3', 'Value 4' ],
          [ { text: 'Bold value', bold: true }, 'Val 2', 'Val 3', 'Val 4' ]
        ]
      }
    }
  ]
};

// define table layouts
var tableLayouts = {
  exampleLayout: {
    hLineWidth: function (i, node) {
      if (i === 0 || i === node.table.body.length) {
        return 0;
      }
      return (i === node.table.headerRows) ? 2 : 1;
    },
    vLineWidth: function (i) {
      return 0;
    },
    hLineColor: function (i) {
      return i === 1 ? 'black' : '#aaa';
    },
    paddingLeft: function (i) {
      return i === 0 ? 0 : 8;
    },
    paddingRight: function (i, node) {
      return (i === node.table.widths.length - 1) ? 0 : 8;
    }
  }
};

// add table layouts
pdfMake.addTableLayouts(tableLayouts);

// download the PDF
pdfMake.createPdf(docDefinition).download();

var pdfmake = require('pdfmake');
pdfmake.addFonts(fonts);

// Declaring your layout
var myTableLayouts = {
    exampleLayout: {
        /*
        Your layout here.
        */
    }
};

// Building the PDF
var pdf = pdfmake.createPdf(docDefinition);

// Writing it to disk
pdf.write('document.pdf').then(() => {
  // success event
}, err => {
  // error event
  console.error(err);
});

var dd = {
  content: [
    {
      table: {
        body: [
          [{text: 'Header with Colspan = 2', style: 'tableHeader', colSpan: 2, alignment: 'center'}, '', {text: 'Header 3', style: 'tableHeader', alignment: 'center'}],
          [{text: 'Header 1', style: 'tableHeader', alignment: 'center'}, {text: 'Header 2', style: 'tableHeader', alignment: 'center'}, {text: 'Header 3', style: 'tableHeader', alignment: 'center'}],
          ['Sample value 1', 'Sample value 2', 'Sample value 3'],
          [{rowSpan: 3, text: 'rowSpan set to 3\nLorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor'}, 'Sample value 2', 'Sample value 3'],
          ['', 'Sample value 2', 'Sample value 3'],
          ['Sample value 1', 'Sample value 2', 'Sample value 3'],
          ['Sample value 1', {colSpan: 2, rowSpan: 2, text: 'Both:\nrowSpan and colSpan\ncan be defined at the same time'}, ''],
          ['Sample value 1', '', ''],
        ]
      }
    }
  ]
}