🧩 1. What Are Modules? Modules allow you to split code into separate files and reuse functionality. Each file is a module. Modules can export values (variables, functions, classes) and import them in other files. Benefits: Better code organization Avoid global scope pollution Reusable and maintainable code 🟢 2. Exporting 🔹 Named Exports You…
🧩 1. var Old way to declare variables (ES5 and earlier). Function-scoped: Available throughout the function where it’s declared. Hoisting: var declarations are hoisted to the top of their scope and initialized as undefined. Can be redeclared and reassigned. 🔹 Example function exampleVar() { console.log(a); // undefined (hoisted) var a = 10; console.log(a); //…
🧩 1. What is an Event Listener? An event listener is a function that waits for a specific event to happen on a DOM element and executes a callback when it occurs. Common events include: click → mouse click input / change → form fields keydown / keyup → keyboard submit → form submission…
🧠 1. The Three Main Ways to Change Content Once you’ve selected an element, you can change its content using: PropertyPurposeExample OutputtextContentChange or read only text“Hello World”innerHTMLChange or read HTML inside<b>Hello</b>innerTextChange text but respects CSS visibility“Visible text only” 1️⃣ textContent Use when you just want to set or get plain text — not HTML.…
1. What is async/await? async/await is a modern way to handle asynchronous code in JavaScript. It’s built on Promises but makes code look synchronous, easier to read, and easier to maintain. async function: Declares a function as asynchronous. It always returns a Promise. await: Pauses the execution of an async function until the Promise…
1. What is a Promise? A Promise is an object that represents the eventual completion (or failure) of an asynchronous operation and its resulting value. States of a Promise: Pending – initial state, operation not finished yet. Fulfilled (Resolved) – operation finished successfully. Rejected – operation failed. Think of a Promise as a “promise…
🔐 ID Token in OpenID Connect (OIDC) Definition:An ID Token is a JSON Web Token (JWT) issued by an Identity Provider (IdP) that proves the identity of a user to a client application. While OAuth 2.0 is primarily about authorization (access to resources), the ID Token is about authentication — confirming who the user…
🔐 OAuth 2.0 and OpenID Connect (OIDC) They’re closely related, but they serve different purposes: ProtocolPurposeSummaryOAuth 2.0AuthorizationLets an app access your data on another service without your passwordOpenID Connect (OIDC)Authentication (Login)Built on top of OAuth 2.0 — confirms who you are 🧩 OAuth 2.0 — Delegated Authorization 💡 Definition OAuth 2.0 is an open…
🔐 What is SAML? Definition:SAML (Security Assertion Markup Language) is an open standard for Single Sign-On (SSO) that allows identity providers (IdPs) to securely pass authentication and authorization data to service providers (SPs). In simple terms: SAML lets users log in once and access multiple web applications using their organization’s credentials — without needing…
Definition:Identity and Access Management (IAM) is a framework of policies, processes, and technologies that ensures the right individuals (or machines) have the appropriate access to resources in an organization. Essentially, it controls who can access what, and under what conditions. IAM is crucial for security, compliance, and operational efficiency. Core Functions of IAM: Authentication:…