Creating your first web apps with React Microsoft Quiz Answers

Get Creating your first web apps with React Microsoft Quiz Answers

React.js is the most popular front-end JavaScript framework. Through JSX, a combination of HTML and JavaScript, developers are able to create views in a natural fashion. Developers can also create components for reusable blocks across their applications. This learning path will introduce you to React, and the core skills you need as a developer to use this powerful framework.

Prerequisites:

Knowledge of HTML/CSS, JavaScript, Git, npm, and some experience with React.

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Module 1: Get started with React

React.js is the most popular front-end JavaScript framework. Developers use JSX, a combination of HTML and JavaScript, to create views in a natural way. Developers can also create components for blocks that can be reused across their applications. This module introduces React and the core skills developers need to use this powerful framework.

Learning objectives:

In this module, you’ll:

• Learn how to define JSX.
• Install React.
• Create a React project.
• Create a React component.
• Work with dynamic data.
• Work with CSS.

Prerequisites:

• Knowledge of HTML, CSS, JavaScript, and Git
• Knowledge of package management with Node.js and npm
• A code editor, such as Visual Studio Code

This module is part of these learning paths:

• Creating your first web apps with React

Quiz 1: Knowledge check

Q1. What is JSX?

• A combination of JavaScript and XML
• A new version of JavaScript
• The output of a React project

Q2. Why would you use JSX to create a React application?

• JSX is the only supported method for creating React applications.
• JSX allows for good code management. It injects the necessary logic with your HTML.
• JSX is supported by all browsers.

Q3. What is the purpose of a bundler in web development?

• To generate JSX
• To convert JSX and other resources into JavaScript
• To bootstrap an application

Module 3: Working with data and properties in React components

The goal of React components is to create reusable blocks of code and UI. To support reusability, you can pass data into components through the use of properties. We will see how to add properties to a component, and work with complex data types such as arrays.

Learning objectives:

In this module, you will:

• Work with props in a component.
• Add logic to a JSX file.
• Use map to work with lists of items.

Prerequisites:

Knowledge of HTML/CSS, JavaScript, Git, npm, and some experience with React.

This module is part of these learning paths:

• Creating your first web apps with React

Quiz 1: Knowledge check

Q1. What function is typically used to display arrays in React?

• Sort
• Filter
• Map
• Reverse

Q2. How do you access props in a function-based React component?

• this.props
• this
• Add a parameter to the function.

Q3. ? can be used as a shorthand for creating if...else statements.

• True
• False

Module 3: React state and events

Applications typically involve data that will be changed by user interactions. These changes are often managed through some form of state and events. In this module, we explore the concepts of state and events. We also look at the tools React provides for management.

Learning objectives:

In this module, you’ll:

• Explore the concepts of state and events.
• Change state values.
• Respond to events.
• Use Hooks to respond to updates.

Prerequisites:

• Knowledge of HTML, CSS, JavaScript, Git, and npm
• Some experience with React

This module is part of these learning paths:

• Creating your first web apps with React

Quiz 1: Knowledge check

Q1. Which function should you use to register an event listener for the Effect Hook?

• useRef
• useMemo
• useState
• useEffect

Q2. In React, which function should you use to register an object as stateful?

• useState
• useEffect
• props

Q3. In programming, what does immutable mean?

• A value can’t be logged.
• A value can’t be altered.
• A project can’t be debugged.

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