localStorage如何存取数组、对象

localStorage存取数组和对象不像存取字符串那样，需要序列化和反序列化

rolePower=["a","b","c"]
存：localStorage.setItem('rolePower',JSON.stringify(rolePower))
取：JSON.parse(localStorage.getItem("rolePower"))

var userNews={
    
    id: "aa", userId: "1234", loginName: "test", name: "测试", orgId: "1001"}
存：localStorage.setItem('user',JSON.stringify(userNews))
取：JSON.parse(localStorage.getItem("user"))