MCSD MCSD Programming in HTML5 5

Question 1

Which JavaScript ES6 feature allows you to extract values from arrays or objects into distinct variables?

Accepted Answer

Destructuring assignment

Answer

Destructuring assignment lets you unpack values from arrays or properties from objects into separate variables using a concise syntax.

Question 2

What is the purpose of the HTML5 `<picture>` element?

Accepted Answer

To provide multiple image sources for responsive and art-direction use cases

Answer

The `<picture>` element holds multiple `<source>` elements, letting the browser pick the most appropriate image based on media queries or format support.

Question 3

In CSS Grid, which property defines the size and number of columns in the grid?

Accepted Answer

grid-template-columns

Answer

`grid-template-columns` sets the number and width of explicit columns in a grid container, accepting values like `repeat(3, 1fr)`.

Question 4

Which HTML5 attribute on a `<script>` tag makes the script download in parallel without blocking HTML parsing and execute after parsing completes?

Accepted Answer

defer

Answer

The `defer` attribute downloads the script without blocking parsing and guarantees execution after the document has been parsed, in order.

Question 5

Which method on the Fetch API is used to parse a JSON response body?

Accepted Answer

response.json()

Answer

`response.json()` reads the Response body and returns a Promise that resolves to the result of parsing it as JSON.

MCSD Exam Practice Test

MCSD Exam Practice Test

MCSD MCSD Programming in HTML5 5