(Since the release of the two awesome mobile operating systems, iPhone and Android, a new term has been added to the Internet community - WebApp (meaning the application based on the Web, which runs on high-end mobile terminal devices). Developers all know that there are two kinds of applications in high-end smartphone systems: one is based on local (operating system) running apps; One is the WebApp running on the browser of high-end computer. This article will mainly explain the latter. Xbaixing People's Network)