翻頁是翻了，可是有個問題，每次翻頁直接到下一章節了，很奇怪。

import?Epub?from?'epubjs'
const?DOWNLOAD_URL?=?'/static/kill-a-bird.epub'
export?default?{
??name:?'Ebook',
??methods:?{
????prevPage?()?{
??????if?(this.rendition)?{
????????this.rendition.prev()
??????}
????},
????nextPage?()?{
??????if?(this.rendition)?{
????????this.rendition.next()
??????}
????},
????//?電子書的解析和渲染
????showEpub?()?{
??????//?生成Book
??????this.book?=?new?Epub(DOWNLOAD_URL)
??????console.log(this.book)
??????//?生成Rendition,通過Book.renderTo
??????this.rendition?=?this.book.renderTo('read',?{
????????width:?window.innerWidth,
????????height:?window.innerHeight
??????})
??????//?通過Rendition.display
??????this.rendition.display()
????}
??},
??mounted?()?{
????this.showEpub()
??}
}