# 数据存储 cookie localStorage seeionStorage | 名称| 有效期| 作用域| | ----- |-----| ----- | | localStorage| 永久| 协议，主机名，端口| | seeionStorage| 浏览器会话时间| 协议，主机名，端口，窗口| storage 相当于js对象 操作和js对象一样 localStorage.foo localStorage.foo = bar delete localStorage.foo api localStorage.getItem/setItem/removeItem/clear