Offline storage technology has many uses in the Web application and it can store the user status, cache data, temporary data, and persistent data and so on. In this paper several typical web client storage technologies are discussed and it includes the IE browser's unique storage technology UserData, localStorage and sessionStorage of HTML5, Web SQL Databases, Indexed Database, as well as classic storage technology Cookie and so on. Their concrete using methods are explained and their individual strengths and differences are compared. Their respective applications occasions and some issues tha...
