feat: session storage

Author: ExploitEngineer

part9 (Advanced Topics)/client-side-storage/localStorage.js

@@ -0,0 +1,17 @@
+/*
+INFO: localStorage
+localstorage allows you to store key-value pairs in the browser, with no expiration. The data stays even after the browser/tab is closed.
+
+INFO: Key Features:
+1. Presistent unit manually cleared
+2. Stores strings only
+3. Max size 5-10 MB
+4. Synchronous API (blocks main thread)
+*/
+
+localStorage.setItem("username", "rafay");
+localStorage.getItem("username");
+localStorage.removeItem("username");
+localStorage.clear(); // clear all keys
+localStorage.key(0);
+localStorage.length;

part9 (Advanced Topics)/client-side-storage/sessionStorage.js

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+/*
+INFO: sessionStorage
+Similar to localStorage, but data is only saved for the current tab/session. It's wiped when the tab is closed.
+
+INFO: Key features:
+1. lives only during the page session(tab)
+2. Same methods & structure as localStorage
+3. ALso stores strings only
+*/
+
+sessionStorage.setItem("authToken", "12345");
+sessionStorage.getItem("authToken");
+seesionStorage.removeItem("authToken");