Q141. How do middleware work in Next.js?
Middleware in Next.js allows you to run code before a request is completed. You can use it to modify the request or response, redirect users, or perform authentication ch...
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Q142. What are mixins in SASS?
A mixin is a feature in Sass that allows you to define a set of CSS styles that can be reused throughout your stylesheet. Example: ``` @mixin my-text-style { font-size: 1...
Q143. Explain the concept of authorization in middleware & routes in Next.js.
Authorization in middleware and routes in Next.js involves checking if a user has the necessary permissions to access a specific route or perform an action. This can be d...
Q144. What are parallel routes in Next.js App Router?
Parallel routes allow you to render multiple pages simultaneously in the same layout. They are defined using slots with the `@` convention. ``` app/ ├── layout.js ├── pag...
Q145. How do you implement intercepting routes in App Router?
Intercepting routes allow you to load a route from another part of your application while keeping the context of the current page, similar to modals. ``` app/ ├── feed/ │...
Q146. How do you handle streaming and suspense in App Router?
The App Router has built-in support for streaming and React Suspense, allowing you to progressively render and stream UI to the client. ```jsx // app/page.js import { Sus...
Q147. Mention at least 3-4 benefits of using Python over the other scripting languages such as Javascript.
Enlisted below are some of the benefits of using Python. Application development is faster and easy. Extensive support of modules for any kind of application development ...
Q148. How to use middleware in Next.js API routes?
In Next.js, you can use middleware to run code before your API route handlers. Middleware can be used for tasks like authentication, logging, or modifying requests and re...
Q149. How to implement optimistic UI with the App Router?
Use client components for local state and immediately update UI optimistically, then call a server action or route handler to persist. On success, revalidate server data;...
Q150. What is a WeakMap?
A `WeakMap` object is a collection of key/value pairs in which the keys are weakly referenced. In this case, keys must be objects and the values can be arbitrary values. ...