SessionStorage has all of those properties: https://developer.mozilla.org/en/docs/Web/API/Window/sessionStorage https://developer.mozilla.org/en/docs/Web/API/W

SessionStorage has all of those properties: https://developer.mozilla.org/en/docs/Web/API/Window/sessionStorage https://developer.mozilla.org/en/docs/Web/API/Window/session... localStorage is often used for it's persistance across closing/reopening the browser, but for times when you don't want storage to bleed across tabs or closing the browser then session storage is much better, and unlike a cookie doesn't automatically get attached to request so there aren't XSRF worries. (You still need to be careful of XSS of course.)