Smarttrak Solar Systems Interview Questions and Answers

Types of state management in React include local state, props, context API, Redux, and MobX.

• Local state: State managed within a component using useState hook.

• Props: Data passed from parent to child components.

• Context API: Allows sharing state across multiple components without prop drilling.

• Redux: External state management library for managing complex state in large applications.

• MobX: Another external state management library that uses observables to manage state.

HTML and CSS are languages used for creating and styling web pages.

• HTML stands for HyperText Markup Language and is used for creating the structure of a web page.

• CSS stands for Cascading Style Sheets and is used for styling the elements on a web page.

• HTML uses tags to define different elements like headings, paragraphs, images, and links.

• CSS is used to control the layout, colors, fonts, and other visual aspects of a web page.

• Both HTML and CSS are essential for building modern...read more

Prop drilling is the process of passing down props from a parent component to nested child components, even if the intermediate components do not use the props.

• Prop drilling can lead to unnecessary passing of props through multiple levels of components.

• It can make the code harder to maintain and understand.

• One way to avoid prop drilling is by using context API or state management libraries like Redux.

• Example: Parent component passes a prop to Child component, which then passe...read more

Reconciliation is the process of comparing two sets of records to ensure they are in agreement.

• Reconciliation involves verifying and adjusting financial transactions to ensure accuracy.

• It is commonly used in accounting to match transactions in bank statements with internal records.

• Reconciliation helps identify discrepancies and errors that need to be resolved.

• Examples include reconciling credit card statements with receipts and reconciling inventory records with physical coun...read more

React JS is a JavaScript library for building user interfaces.

• React JS is developed and maintained by Facebook.

• It allows developers to create reusable UI components.

• React uses a virtual DOM for better performance.

• It follows a component-based architecture.

• React can be used for building single-page applications.