Cookie, sessionstorage, localstorage differences

1, Data validity

cookies Is valid before its set expiration time

localstorage The data in it will remain valid unless it is deleted

sessionstorage When the browser or page closes, the data is destroyed

2, The size of the storage

cookie The size of is limited to 4KB

storage Than cookies Much more , Generally speaking, there are 5M

3, Access restrictions

cookies and localstorage You can access... In all windows of the browser

sessionstorage Can only be accessed in the same window of the same source

4, Communicate with the server

Cookie, Every time I carry it in HTTP In the head , and storage Not automatically sent to the server