Rigi Interview Questions and Answers

Hooks, Redux, push notification, JavaScript basics

• Hooks are a feature in React that allow you to use state and other React features without writing a class

• Redux is a state management library for JavaScript applications

• Push notifications are messages that are sent to a user's device from a server or a backend system

• JavaScript basics include understanding variables, data types, functions, and control flow

React Native is a framework for building mobile applications using JavaScript and React.

• React Native is a cross-platform framework developed by Facebook.

• It allows developers to build mobile apps using JavaScript and React.

• It uses native components to render UI elements, resulting in a native-like performance.

• Code written in React Native can be shared between iOS and Android platforms.

• It provides a rich set of pre-built...read more

Redux is a predictable state container for JavaScript apps. React Navigation is used for navigation in React Native.

• Redux is a state management library commonly used with React to manage application state in a predictable way.

• It helps in maintaining a single source of truth for the state of the entire application.

• Redux works by having a central store that holds the entire state tree of the application.

• React Navigation ...read more

Class components and functional components are two ways to create components in React Native.

• Class components are created using ES6 class syntax and extend the React.Component class.

• Functional components are created using JavaScript functions.

• Class components have a state and lifecycle methods, while functional components do not.

• Functional components are simpler and easier to test and maintain.

• Class components are reco...read more

Context is a feature in React that allows data to be passed down the component tree without manually passing props. Hooks are functions that allow you to use state and other React features in functional components.

• Context is used to share data between components without passing props explicitly

• Hooks are functions that allow you to use state and other React features in functional components

• Context provides a way to pass...read more

Use props to pass data from parent component to child component, and use state to manage shared data between sibling components.

• Pass data from parent to child components using props

• Use state management libraries like Redux or Context API to share data between sibling components

• Use event emitters or callbacks to communicate between components

Virtual DOM is a lightweight copy of the actual DOM, used for efficient updates in React applications.

• Virtual DOM is a concept in React where a lightweight copy of the actual DOM is created.

• It allows React to efficiently update the UI by comparing the virtual DOM with the actual DOM and only making necessary changes.

• This helps in improving performance by reducing the number of direct manipulations to the actual DOM.

• For...read more

call, bind, and apply are methods used to manipulate the context of a function in JavaScript.

• call - calls a function with a given 'this' value and arguments provided individually.

• bind - creates a new function that, when called, has its 'this' keyword set to the provided value.

• apply - calls a function with a given 'this' value and arguments provided as an array.