HTML to React JSX Conversion

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Questions and Answers

Which statement correctly describes the primary role of JSX in React development?

JSX is a templating engine used for server-side rendering in React applications.
JSX is used to directly manipulate the DOM, improving rendering performance.
JSX allows developers to write HTML-like syntax that gets transformed into JavaScript code for creating React elements. (correct)
JSX is a tool for styling React components using CSS-in-JS techniques.

Consider the following JSX code: `<h1>Hello, {name}!</h1>`. What is the purpose of the curly braces `{}`?

They are used to define CSS styles within the JSX.
They indicate a JavaScript expression that should be evaluated and inserted into the JSX. (correct)
They are used to define HTML attributes for the `<h1>` element.
They allow you to write multiline strings in JSX.

What is the significance of using `className` instead of `class` as an attribute in JSX?

`class` is a reserved keyword in JavaScript, so `className` is used to avoid conflicts. (correct)
`className` is shorter and easier to type than `class`.
`className` allows you to apply multiple CSS classes to an element, unlike `class`.
There is no difference; both `class` and `className` can be used interchangeably in JSX.

How does JSX contribute to writing more maintainable React code?

<p>JSX provides a more readable and structured way to define UI components, making the code easier to understand and modify. (D)</p> Signup and view all the answers

In JSX, how do you handle inline styles?

<p>By using the <code>style</code> attribute with an object where keys are CSS properties and values are the corresponding styles. (C)</p> Signup and view all the answers

Given the following JSX snippet, what will be the output?

`<div>{10 > 5 ? 'True' : 'False'}</div>`

<p><code>True</code> (B)</p> Signup and view all the answers

If you have a JavaScript variable `const imageUrl = 'https://example.com/image.png';`, how would you correctly use it within an `<img>` tag in JSX?

<p><code><img src={imageUrl} /></code> (B)</p> Signup and view all the answers

What is the correct way to render a list of items in JSX, assuming you have a JavaScript array called `items`?

<p><code>{items.map(item => <div>{item}</div>)}</code> (A)</p> Signup and view all the answers

How do you handle comments within JSX code?

<p>Using curly braces and JavaScript-style comments: <code>{/* This is a comment */}</code> (B)</p> Signup and view all the answers

In JSX, what does the term 'fragment' refer to, and why is it useful?

<p>A fragment is a way to group multiple elements without adding an extra node to the DOM. (C)</p> Signup and view all the answers

Flashcards

JSX Component Equivalent

A React component that renders HTML elements, mirroring the structure and content of the provided HTML code snippet.

tag in JSX

Represents emphasized text in HTML. In JSX it remains virtually the same.

tag in JSX

Represents strong or important text in HTML. In JSX it remains virtually the same.

tag in JSX

An unordered list in HTML. In JSX, the tag remains the same, but needs to be enclosed within a fragment or a parent element.
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tag in JSX

A list item within an ordered or unordered list. In JSX it remains virtually the same.
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tag in JSX

Creates a hyperlink to another web page or resource. In JSX it remains virtually the same.
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Study Notes

The question asks for the translation of given HTML code into a React component using JSX.

All options (A, B, C, and D) provide the same JSX code which mirrors the structure and content of the original HTML.

The JSX code includes a main heading (Welcome to Our Website), a paragraph with emphasized and strong text, an unordered list, and a link.

Both <em> and <strong> HTML elements have been translated without any changes.

The unordered list contains three list items: Item 1, Item 2, and Item 3.

The link has the text "Visit Example".

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