docx-js/demo/42-restart-page-numbers.ts

// Page numbers - Start from 0 on a new section
// Import from 'docx' rather than '../build' if you install from npm
import * as fs from "fs";
import { AlignmentType, Document, Header, Packer, PageBreak, PageNumber, PageNumberSeparator, Paragraph, TextRun } from "../build";

const doc = new Document({
    sections: [
        {
            headers: {
                default: new Header({
                    children: [
                        new Paragraph({
                            alignment: AlignmentType.RIGHT,
                            children: [
                                new TextRun("My Title "),
                                new TextRun({
                                    children: ["Page ", PageNumber.CURRENT],
                                }),
                            ],
                        }),
                    ],
                }),
                first: new Header({
                    children: [
                        new Paragraph({
                            alignment: AlignmentType.RIGHT,
                            children: [
                                new TextRun("First Page Header "),
                                new TextRun({
                                    children: ["Page ", PageNumber.CURRENT],
                                }),
                            ],
                        }),
                    ],
                }),
            },
            children: [
                new Paragraph({
                    children: [new TextRun("First Page"), new PageBreak()],
                }),
                new Paragraph("Second Page"),
            ],
        },
        {
            properties: {
                page: {
                    pageNumbers: {
                        start: 1,
                        separator: PageNumberSeparator.EM_DASH,
                    },
                },
            },
            headers: {
                default: new Header({
                    children: [
                        new Paragraph({
                            alignment: AlignmentType.RIGHT,
                            children: [
                                new TextRun("My Title "),
                                new TextRun({
                                    children: ["Page ", PageNumber.CURRENT],
                                }),
                            ],
                        }),
                    ],
                }),
                first: new Header({
                    children: [
                        new Paragraph({
                            alignment: AlignmentType.RIGHT,
                            children: [
                                new TextRun("First Page Header of Second section"),
                                new TextRun({
                                    children: ["Page ", PageNumber.CURRENT],
                                }),
                            ],
                        }),
                    ],
                }),
            },
            children: [
                new Paragraph({
                    children: [new TextRun("Third Page"), new PageBreak()],
                }),
                new Paragraph("Fourth Page"),
            ],
        },
    ],
});

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