Research and discussion of web offline application based on HTML5

HTML5 is seen as a language description way of constructing Webpage content,which gives the Webpage meaning and structure better. With the large- scale application of HTML Web application,developers often encounter the problems of storing Web data background to offline,HTML5 provides Web Storage and Web Database Storage mechanism,which are respectively used for storing the key / value and complex interactive data,it has larger storage capacity and higher effectiveness than cookie technology,so the offline data storage and server synchronization problems are solved efficiently.