localStorage.setItem("MYDATA","hoge");
localStorage.MYDATA = "hoge";
localStorage["MYDATA"] = "hoge";
var data = localStorage.getItem("MYDATA");
var data = localStorage.MYDATA;
var data = localStorage["MYDATA"];
localStorage.removeItem("MYDATA");
delete localStorage.MYDATA;
delete localStorage.["MYDATA"];
localStorage.length
localStorage.clear();
sessionStorage.setItem("MYDATA","hoge");
sessionStorage.MYDATA = "hoge";
sessionStorage["MYDATA"] = "hoge";
var data = sessionStorage.getItem("MYDATA");
var data = sessionStorage.MYDATA;
var data = sessionStorage["MYDATA"];
sessionStorage.length
sessionStorage.clear();