Q1771. How do you test App Router components and pages?
Use React Testing Library for components and Jest for unit tests. For full page integration you can use `next-router-mock` or render server components with `@testing-libr...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Q1772. What is namespacing in vuex?
By default in Vuex, all actions, mutations, and getters inside modules are registered under the **global namespace**—meaning multiple modules can react to the exact same ...
Q1773. What Are The Optional Statements Possible Inside A Try-Except Block In Python?
There are two optional clauses you can use in the try-except block. The "else" clause It is useful if you want to run a piece of code when the try block doesn't create an...
Q1774. What are various operators supported by javascript?
An operator is capable of manipulating(mathematical and logical computations) a certain value or operand. There are various operators supported by JavaScript as below, 1....
Q1775. How JSX prevents Injection Attacks?
React DOM escapes any values embedded in JSX before rendering them. Thus it ensures that you can never inject anything that’s not explicitly written in your application. ...
Q1776. 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;...
Q1777. What is the default namespace behavior in vuex?
By default, actions, mutations and getters inside modules are still registered under the global namespace. Because of that multiple modules react to the same mutation/act...
Q1778. What Is A String In Python?
A string in Python is a sequence of alpha-numeric characters. They are immutable objects. It means that they don't allow modification once they get assigned a value. Pyth...
Q1779. What is a rest parameter?
Rest parameter is an improved way to handle function parameters which allows us to represent an indefinite number of arguments as an array. The syntax would be as below, ...
Q1780. How do you update rendered elements?
You can update UI(represented by rendered element) by passing the newly created element to ReactDOM's render method. For example, lets take a ticking clock example, where...