本地存储

(function(){
        //本地存储start
        var Util=(function(){
            var prefix='html5_reader_';
            var storageGetter=function(key){
                return localStorage.getItem( prefix + key)
            }
            var storageSetter=function(key,val){
                return localStorage.setItem( prefix + key,val)
            }
            
            return {
                storageGetter:storageGetter,
                storageSetter:storageSetter
            }
        })()


Util.storageGetter(key)
Util.storageSetter(key,val)