feat: add indexedDB

Author: ExploitEngineer

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

@@ -0,0 +1,26 @@
+/*
+INFO: IndexedDB
+IndexedDB is a client-side NoSQL database that allows you to store structured data in the browser (objects, blobs, etc).
+
+
+INFO: Key features:
+1. Asynchronous API
+2. Stores large amounts of data (100s of MBs)
+3. Ideal for offline apps
+4. Uses transctions and object stores
+*/
+
+const request = indexedDB.open("myDatabase", 1);
+
+request.onupgradeneeded = function(event) {
+  const db = event.target.result;
+  db.createObjectStore("users", { keyPath: "id" });
+};
+
+request.onsuccess = function(event) {
+  const db = event.target.result;
+  const transaction = db.transaction(["users"], "readwrite");
+  const store = transaction.objectStore("users");
+
+  store.add({ id: 1, name: "rafay", age: 21 });
+}