Built-in map functions in SASS - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

What does the following Sass map function return?

Consider this Sass code:

$colors: (primary: #333, secondary: #666, accent: #f06);
$keys: map-keys($colors);

What is the value of $keys?

SASS

$colors: (primary: #333, secondary: #666, accent: #f06);
$keys: map-keys($colors);

A (0, 1, 2)

B (primary, secondary, accent)

C (primary: #333, secondary: #666, accent: #f06)

D (#333, #666, #f06)

💡 Hint

Think about what keys mean in a map: they are the names, not the values.

The map-keys() function returns a list of all the keys in the map. Here, the keys are primary, secondary, and accent.

📝 Syntax

intermediate

Which option correctly retrieves the value for 'secondary' from a Sass map?

Given this Sass map:

$palette: (primary: #111, secondary: #222, tertiary: #333);

Which code correctly gets the value #222?

SASS

$palette: (primary: #111, secondary: #222, tertiary: #333);

A $palette['secondary']

B map-get($palette, 'secondary')

C map-get($palette, "secondary")

D map-get($palette, secondary)

💡 Hint

Keys in Sass maps are identifiers, not strings unless quoted.

In Sass, map keys can be unquoted identifiers. Using map-get($palette, secondary) correctly retrieves the value. Using quotes treats the key as a string which does not match the unquoted key.

❓ rendering

advanced

What color will the button background be after this Sass code compiles?

Given this Sass code:

$theme-colors: (primary: #0055ff, danger: #ff0000);
.btn {
  background-color: map-get($theme-colors, danger);
}

What color will the button have in the browser?

SASS

$theme-colors: (primary: #0055ff, danger: #ff0000);
.btn {
  background-color: map-get($theme-colors, danger);
}

A Red (#ff0000)

B Transparent

C Blue (#0055ff)

D Black (#000000)

💡 Hint

Look at which key is used in map-get for the background color.

The map-get function retrieves the value for the key danger, which is #ff0000 (red). So the button background will be red.

🧠 Conceptual

advanced

Which Sass function returns the number of key-value pairs?

You want to find out how many items are in a Sass map. Which function gives you this number?

A length()

B map-count()

C map-size()

D map-keys()

💡 Hint

Think about the function that measures how many pairs exist.

map-size() returns the number of key-value pairs in a Sass map. The other functions do not exist or return different data.

❓ accessibility

expert

How can Sass maps help improve accessibility in theming?

You want to create a theme with colors that adapt for better contrast and readability. How can Sass maps assist in this task?

A By storing color names and values in maps, you can easily switch themes and ensure consistent accessible colors.

B Sass maps automatically adjust colors for contrast without extra code.

C Maps allow you to write CSS that disables colors for screen readers.

D Using maps forces all colors to be grayscale, improving accessibility.

💡 Hint

Think about how organizing colors helps maintain consistent styles.

Sass maps let you group color values by name. This makes it easy to swap entire color sets for different themes, including high-contrast ones for accessibility. Sass itself does not automatically adjust colors or disable them for screen readers.