set timeout for localStorage or sessionStorage

javascript-localstorage-expiry.js

http://apassant.net/2012/01/16/timeout-for-html5-localstorage/

var hours = 24; // Reset when storage is more than 24hours
var now = new Date().getTime();
var setupTime = localStorage.getItem('setupTime');
if (setupTime == null) {
    localStorage.setItem('setupTime', now)
} else {
    if(now-setupTime > hours*60*60*1000) {
        localStorage.clear()
        localStorage.setItem('setupTime', now);
    }
}

this is a easy way..

Well, working exactly what I needed !!

Worked well. Thanks

Thank you :)

ES6 conversion:

// Clear on startup if expired
let hours = 2
let saved = localStorage.getItem('saved')
if (saved && (new Date().getTime() - saved > hours * 60 * 60 * 1000)) {
  localStorage.clear()
}

// Increase expiration time after save
localStorage.setItem('saved', new Date().getTime())

Thanks a lot !!