Expiry of sessionStorage

javascript html storage
Jitesh Tukadiya picture Jitesh Tukadiya · Mar 2, 2013 · Viewed 66.9k times · Source

I am building a form in which i have to store the data in html5's sessionStorage i don't know where the sessionStorage expires. Can anyone tell me about the expiration time of the sessionStorage

Answer

Peter Rasmussen picture Peter Rasmussen · Mar 2, 2013

It lives and dies with your browser session and is not shared between tabs. It doesn't expire automatically. So if you never close your browser it never expires.

So when the tab/window is closed the data is lost.

Each sessionstorage area is allowed 5mb of storage (in some browsers 10mb). Where as cookies only allow 4kb (or more in some browsers). Cookies however has a set expiration date.

As Christophe wrote in the comments, localstorage never expires. It's also shared across tabs and is the same size as sessionstorage (5mb).

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