docx-js/demo/33-sequential-captions.ts

// Sequential Captions
// Import from 'docx' rather than '../build' if you install from npm
import * as fs from "fs";
import { Document, Packer, Paragraph, SequentialIdentifier, TextRun } from "../build";

const doc = new Document({
    sections: [
        {
            children: [
                new Paragraph({
                    children: [
                        new TextRun("Hello World 1->"),
                        new SequentialIdentifier("Caption"),
                        new TextRun(" text after sequencial caption 2->"),
                        new SequentialIdentifier("Caption"),
                    ],
                }),
                new Paragraph({
                    children: [
                        new TextRun("Hello World 1->"),
                        new SequentialIdentifier("Label"),
                        new TextRun(" text after sequencial caption 2->"),
                        new SequentialIdentifier("Label"),
                    ],
                }),
                new Paragraph({
                    children: [
                        new TextRun("Hello World 1->"),
                        new SequentialIdentifier("Another"),
                        new TextRun(" text after sequencial caption 3->"),
                        new SequentialIdentifier("Label"),
                    ],
                }),
                new Paragraph({
                    children: [
                        new TextRun("Hello World 2->"),
                        new SequentialIdentifier("Another"),
                        new TextRun(" text after sequencial caption 4->"),
                        new SequentialIdentifier("Label"),
                    ],
                }),
            ],
        },
    ],
});

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