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SVG icon usage in Bootsrap - Interactive Code Practice

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the code to include a Bootstrap SVG icon for a star.

Bootsrap
<svg class="bi" width="32" height="32" fill="currentColor" aria-label="Star icon">
  <use xlink:href="[1]"></use>
</svg>
Drag options to blanks, or click blank then click option'
A#star
B#circle
C#star-fill
D#square
Attempts:
3 left
💡 Hint
Common Mistakes
Using an ID that does not exist in the Bootstrap SVG sprite.
Forgetting the '#' before the icon ID.
2fill in blank
medium

Complete the code to add an accessible label to the SVG icon.

Bootsrap
<svg class="bi" width="24" height="24" fill="currentColor" role="img" [1]>
  <use xlink:href="#heart"></use>
</svg>
Drag options to blanks, or click blank then click option'
Aaria-hidden="true"
Btitle="Heart icon"
Caria-label="Heart icon"
Dalt="Heart icon"
Attempts:
3 left
💡 Hint
Common Mistakes
Using alt attribute on SVG, which is invalid.
Setting aria-hidden="true" hides the icon from screen readers.
3fill in blank
hard

Fix the error in the SVG icon usage by completing the missing attribute.

Bootsrap
<svg class="bi" width="16" height="16" fill="currentColor" [1]>
  <use xlink:href="#alarm"></use>
</svg>
Drag options to blanks, or click blank then click option'
Aaria-hidden="false"
Brole="img"
Ctitle="Alarm icon"
Dalt="Alarm icon"
Attempts:
3 left
💡 Hint
Common Mistakes
Using alt attribute on SVG, which is invalid.
Omitting the role attribute, making the icon invisible to screen readers.
4fill in blank
hard

Fill the three blanks to create a red colored Bootstrap SVG icon with an accessible label.

Bootsrap
<svg class="bi" width="40" height="40" fill="[1]" role="img" aria-label="[2] icon">
  <use xlink:href="#[3]"></use>
</svg>
Drag options to blanks, or click blank then click option'
Ared
Bblue
Cheart
Dstar
Attempts:
3 left
💡 Hint
Common Mistakes
Mismatching the aria-label and the icon ID.
Using a color name not supported in CSS.
5fill in blank
hard

Fill all three blanks to create a responsive Bootstrap SVG icon with a blue fill and an accessible label for a 'check' icon.

Bootsrap
<svg class="bi" width="[1]" height="[2]" fill="[3]" role="img" aria-label="Check icon">
  <use xlink:href="#check"></use>
</svg>
Drag options to blanks, or click blank then click option'
A24
B32
Cblue
Dgreen
Attempts:
3 left
💡 Hint
Common Mistakes
Using mismatched width and height values.
Choosing a fill color that does not match the aria-label.

Practice

(1/5)
1. What is the main advantage of using SVG icons in Bootstrap over traditional image icons?
easy
A. They scale smoothly without losing quality on any screen size.
B. They load faster because they are always smaller files than images.
C. They automatically add animation effects without extra code.
D. They require no accessibility attributes to be readable.

Solution

  1. Step 1: Understand SVG icon properties

    SVG icons are vector graphics, meaning they can scale to any size without losing sharpness or quality.

  2. Step 2: Compare with traditional images

    Unlike raster images, SVGs do not pixelate when enlarged, making them ideal for responsive designs.

  3. Final Answer:

    They scale smoothly without losing quality on any screen size. -> Option A

  4. Quick Check:

    SVG icons scale well = A [OK]
Hint: SVG icons stay sharp at any size, unlike images [OK]
Common Mistakes:
  • Thinking SVG files are always smaller than images
  • Assuming SVGs add animations automatically
  • Ignoring accessibility needs for icons
2. Which of the following is the correct way to set the color of a Bootstrap SVG icon to match surrounding text?
easy
A.
B.
C.
D.

Solution

  1. Step 1: Identify how SVG color matches text

    Using fill="currentColor" makes the SVG icon inherit the current text color automatically.

  2. Step 2: Check other options

    Options A and D set fixed colors, not dynamic. <svg color="text"></svg> uses an invalid attribute for SVG color.

  3. Final Answer:

    <svg fill="currentColor"></svg> -> Option A

  4. Quick Check:

    Use fill="currentColor" for text color match [OK]
Hint: Use fill="currentColor" to inherit text color [OK]
Common Mistakes:
  • Using fixed color codes instead of currentColor
  • Trying to use CSS color property inside SVG fill
  • Confusing fill with stroke attribute
3. What will be the visible result of this Bootstrap SVG icon code snippet?
<svg class="bi bi-star" width="2rem" height="2rem" fill="currentColor"><use xlink:href="#star" /></svg>
medium
A. A star icon sized 2 rem by 2 rem, colored like the surrounding text.
B. An empty box because the #star symbol is not defined in the snippet.
C. A star icon but always black regardless of text color.
D. A broken image icon because SVG cannot use <use> elements.

Solution

  1. Step 1: Understand the use of <use> with xlink:href

    The <use> element references an SVG symbol with id "star" defined elsewhere in the document or sprite.

  2. Step 2: Check if #star is defined

    Since the snippet does not define the symbol with id "star", the icon will not render and show empty space or nothing.

  3. Final Answer:

    An empty box because the #star symbol is not defined in the snippet. -> Option B

  4. Quick Check:

    Undefined symbol reference = empty icon [OK]
Hint: SVG <use> needs defined symbol to show icon [OK]
Common Mistakes:
  • Assuming <use> works without symbol definition
  • Thinking fill="currentColor" forces black color
  • Believing SVG <use> is unsupported
4. Identify the error in this Bootstrap SVG icon usage:
<svg role="img" aria-label="Search icon"><path d="M10 10 L20 20" /></svg>
medium
A. Missing <title> element for accessibility despite role and aria-label.
B. Missing fill attribute to set icon color.
C. Missing width and height attributes for sizing.
D. Incorrect use of <path> element inside SVG.

Solution

  1. Step 1: Check SVG accessibility attributes

    The SVG has role="img" and aria-label="Search icon", which is good for screen readers.

  2. Step 2: Check for sizing attributes

    SVG icons should have width and height attributes to define visible size; missing here means it may not display properly.

  3. Final Answer:

    Missing width and height attributes for sizing. -> Option C

  4. Quick Check:

    SVG needs width and height to show correctly [OK]
Hint: Always add width and height to SVG icons [OK]
Common Mistakes:
  • Thinking fill attribute is mandatory for visibility
  • Assuming aria-label replaces need for sizing
  • Believing <path> usage is incorrect here
5. You want to use a Bootstrap SVG icon that changes color based on a button's state (normal and hover). Which approach correctly applies this behavior?
hard
A. Wrap SVG in a <span> and toggle different SVG files on hover.
B. Set a fixed fill color on SVG and change it with JavaScript on hover.
C. Use inline styles on SVG to change fill color on hover directly.
D. Set fill="currentColor" on the SVG and change the button's text color with CSS on hover.

Solution

  1. Step 1: Use fill="currentColor" for color inheritance

    Setting fill="currentColor" makes the SVG icon inherit the text color of its container.

  2. Step 2: Change button text color on hover with CSS

    By changing the button's text color on hover, the SVG icon color changes automatically without extra code.

  3. Final Answer:

    Set fill="currentColor" on the SVG and change the button's text color with CSS on hover. -> Option D

  4. Quick Check:

    fill="currentColor" + CSS hover color = dynamic icon color [OK]
Hint: Use fill="currentColor" and CSS text color hover [OK]
Common Mistakes:
  • Using fixed fill colors that don't change on hover
  • Trying to change SVG fill with inline styles on hover
  • Replacing SVG files instead of using CSS color changes
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10 questions~5 mineasy hard