A browser-based EPUB3.0 reader application is developed with HTML 5,CSS3 and JavaScript technolo-gies.The algorithm for parsing OPF documents and content documents , and the theory of EPUB Canonical Frag-ment Identifier(CFI) are discussed in detail.This EPUB3.0 reader is able to support more media types and seman-tics than other similar applications .%利用HTML5、CSS3和JavaScript技术,设计并实现了一种支持EPUB3.0电子书的在线阅读软件,主要讨论了EPUB3.0标准的开放容器文档和内容文档的解析算法,以及EPUBCFI规范的实现原理.相比较于同类软件,该阅读软件对EPUB3.0标准的媒体类型与语义属性支持更加全面.
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