CAT Group Senior Project Engineer Interview Questions and Answers

JavaScript is a scripting language used for web development.

• JavaScript is used to add interactivity to web pages.

• It is a client-side language that runs on the user's browser.

• JavaScript is different from other programming languages as it is interpreted rather than compiled.

• It is also a loosely typed language, meaning variables can change data types.

• Examples of JavaScript frameworks include React, Angular, and Vue.

React Native is preferred for its cross-platform capabilities and ease of use. It differs from Angular in its component-based architecture.

• React Native allows for building mobile apps for both iOS and Android platforms using a single codebase.

• React Native uses a component-based architecture, making it easier to manage and reuse code.

• Angular is a full-fledged framework with a steeper learning curve compared to React Nat...read more

Redux is a state management library for JavaScript applications.

• Redux helps manage the state of an application in a predictable way.

• It uses a single source of truth, called the store, to hold the state of the application.

• Actions are dispatched to the store, which then updates the state using reducers.

• React components can subscribe to the store to receive updates to the state.

• Redux can be used with React using the react

Stylesheet.create is a function in React Native used to create a stylesheet object.

• It takes an object as an argument and returns a stylesheet object.

• The stylesheet object can be used to style components in React Native.

• It is a recommended way to define styles in React Native.

• Example: const styles = StyleSheet.create({ container: { flex: 1, backgroundColor: '#fff' } })

• The styles object can then be used in components lik