docx-js/demo/demo16.ts

// Multiple sections and headers
// Import from 'docx' rather than '../build' if you install from npm
import * as fs from "fs";
import { Document, Packer, PageNumberFormat, PageOrientation, Paragraph, TextRun } from "../build";

const doc = new Document();

const paragraph = new Paragraph("Hello World").pageBreak();

doc.add(paragraph);

const header = doc.createHeader();
header.add(new Paragraph("Header on another page"));
const footer = doc.createFooter();
footer.add(new Paragraph("Footer on another page"));

doc.addSection({
    headers: {
        default: header,
    },
    footers: {
        default: footer,
    },
    pageNumberStart: 1,
    pageNumberFormatType: PageNumberFormat.DECIMAL,
});

doc.add(new Paragraph("hello"));

doc.addSection({
    headers: {
        default: header,
    },
    footers: {
        default: footer,
    },
    pageNumberStart: 1,
    pageNumberFormatType: PageNumberFormat.DECIMAL,
    orientation: PageOrientation.LANDSCAPE,
});

doc.add(new Paragraph("hello in landscape"));

const header2 = doc.createHeader();
const pageNumber = new TextRun("Page number: ").pageNumber();
header2.add(new Paragraph({}).addRun(pageNumber));

doc.addSection({
    headers: {
        default: header2,
    },
    orientation: PageOrientation.PORTRAIT,
});

doc.add(new Paragraph("Page number in the header must be 2, because it continues from the previous section."));

doc.addSection({
    headers: {
        default: header2,
    },
    pageNumberFormatType: PageNumberFormat.UPPER_ROMAN,
    orientation: PageOrientation.PORTRAIT,
});

doc.add(new Paragraph(
    "Page number in the header must be III, because it continues from the previous section, but is defined as upper roman.",
));

doc.addSection({
    headers: {
        default: header2,
    },
    pageNumberFormatType: PageNumberFormat.DECIMAL,
    pageNumberStart: 25,
    orientation: PageOrientation.PORTRAIT,
});

doc.add(new Paragraph("Page number in the header must be 25, because it is defined to start at 25 and to be decimal in this section."));

const packer = new Packer();

packer.toBuffer(doc).then((buffer) => {
    fs.writeFileSync("My Document.docx", buffer);
});