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    Web Development in React

    Unit 1

    Introduction to React

    Understanding React and Its Importance
    Setting Up the Development Environment

    Unit 2

    React Basics

    JSX Deep Dive
    Components and Props
    State and Lifecycle

    Unit 3

    Advanced React Techniques

    Handling Events in React
    Conditional Rendering
    Lists and Keys

    Unit 4

    State Management

    Using Context API
    Redux Essentials

    Unit 5

    Connecting to Back-End

    Fetching Data with Axios
    Using Firebase in React

    Unit 6

    Testing and Deployment

    Unit Testing in React
    Deployment Best Practices
    ;

    Unit 3 • Chapter 3

    Lists and Keys

    Summary

    Concept Check

    What is the primary purpose of keys in Lists in React?

    Why should keys be unique in a React list?

    What can happen if list keys are not unique in React?

    In React, where should keys be assigned inside lists?

    What does not require keys in React?

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