Checks your browser for Local Storage
// ==UserScript==
// @name LocalStorage Checker
// @namespace https://kat.cr/user/Sasidhar.
// @version 0.1
// @description Checks your browser for Local Storage
// @author Sasidhar
// @match http://*/*
// @include http://*/*
// @include https://*/*
// @grant none
// ==/UserScript==
if(window.localStorage) {
alert('local Storage exists ');
} else {
alert('local storage does not exist in your browser');
}