HTML5之storage

storage包括:localStorage、sessionStorage;

这两个对象直接使用就是，无需创建

API:

localStorage.setItem("键","值")
localStorage.getItem("key");
localStorage.removeItem("key");
localStorage.clear()//清空
localStorage.length
localStorage.key(index)//返回对应下标的key

sessionStorage API同上

storage有增、删、查的API;

localStorage.key(index)

返回的是key,与

localStorage.getItem("key")

组合使用可获取存储的任意值