npm i epubjs

import Epub from "epubjs";
import type { Book, Rendition } from 'epubjs'
import type { BookOptions } from 'epubjs/types/book'
import type { RenditionOptions } from 'epubjs/types/rendition'
 
export function useEpub() {
  let book: Book
  let rendition: Rendition
 
  function createBook(urlOrData?: string | ArrayBuffer, options?: BookOptions) {
    if(!urlOrData) {
      book = Epub(options)
    } else {
      book = Epub(urlOrData, options)
    }
    return book
  }
 
  function render(element: Element | string, options?: RenditionOptions) {
    if(!book) return
    if(typeof element === 'string') {
      rendition = book.renderTo(element, options)
    } else {
      rendition = book.renderTo(element, options)
    }
    return rendition
  }
 
  function display() {
    if(!rendition) return
    return rendition.display()
  }
 
  function getBook() {
    return book
  }
 
  function getRendition() {
    return rendition
  }
 
  return { createBook, render, display, getBook, getRendition }
}

<template>
  <div class="main">
    <div id="epub"></div>
    <div class="btn">
      <button @click="pre">pre</button>
      <button @click="next">next</button>
    </div>
  </div>
</template>
<script setup lang="ts">
import { useEpub } from '../hooks'
import { onMounted } from 'vue'
 
const { createBook, render, display, getRendition } = useEpub()
 
onMounted(() => {
  createBook('static/example.epub')
  render('epub', { width: '100%', height: '100%' })
  display()
})
 
// 上一頁
const pre = async () => {
  await getRendition().prev()
}
 
// 下一頁
const next = async () => {
  await getRendition().next()
}
</script>
<style scoped>
.main {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
 
.main > #epub {
  width: 500px;
  height: 500px;
  border: 1px dashed red;
  box-sizing: border-box;
}
.main .btn {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
}
.main .btn button {
  padding: 7px 15px;
  margin-left: 20px;
}
</style>