Striped and hover tables in Bootsrap - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ rendering

intermediate

What visual effect does the .table-striped class add to a Bootstrap table?

Look at a Bootstrap table with the .table-striped class applied. What will you see when the table is rendered in a browser?

Bootsrap

<table class="table table-striped">
  <thead>
    <tr><th>#</th><th>Name</th></tr>
  </thead>
  <tbody>
    <tr><td>1</td><td>Alice</td></tr>
    <tr><td>2</td><td>Bob</td></tr>
    <tr><td>3</td><td>Carol</td></tr>
  </tbody>
</table>

A Table header cells become bold and underlined.

B Rows alternate background colors, making every other row shaded differently.

C Rows highlight with a color when hovered by the mouse pointer.

D Table borders become thicker and darker.

💡 Hint

Think about how to make reading rows easier by changing backgrounds.

The .table-striped class adds alternating background colors to table rows, improving readability by visually separating rows.

❓ rendering

intermediate

What does the .table-hover class do in a Bootstrap table?

Given a Bootstrap table with the .table-hover class, what visual effect will you see when you move your mouse over the rows?

Bootsrap

<table class="table table-hover">
  <thead>
    <tr><th>ID</th><th>City</th></tr>
  </thead>
  <tbody>
    <tr><td>1</td><td>Paris</td></tr>
    <tr><td>2</td><td>London</td></tr>
    <tr><td>3</td><td>Tokyo</td></tr>
  </tbody>
</table>

A Table header cells become clickable buttons.

B Rows have alternating background colors by default.

C Rows change background color when hovered by the mouse pointer.

D Table rows become bold when clicked.

💡 Hint

Hover means moving the mouse over something.

The .table-hover class highlights the row background on mouse hover, helping users track which row they are pointing at.

❓ selector

advanced

Which CSS selector does Bootstrap use internally to apply the hover effect for .table-hover?

Bootstrap applies a background color on table rows when hovered using a CSS selector. Which selector correctly targets the rows inside a table with .table-hover?

A .table-hover tbody tr:hover

B .table-hover tr:hover

C tbody tr:hover

D .table-hover > tr:hover

💡 Hint

Think about which rows inside the table body get hovered.

Bootstrap uses the selector .table-hover tbody tr:hover to apply hover styles only to rows inside the table body, not headers or footers.

❓ layout

advanced

How do .table-striped and .table-hover classes interact when both are applied to a Bootstrap table?

If you add both .table-striped and .table-hover classes to a Bootstrap table, what will be the combined visual effect?

Bootsrap

<table class="table table-striped table-hover">
  <thead>
    <tr><th>#</th><th>Item</th></tr>
  </thead>
  <tbody>
    <tr><td>1</td><td>Pen</td></tr>
    <tr><td>2</td><td>Notebook</td></tr>
    <tr><td>3</td><td>Eraser</td></tr>
  </tbody>
</table>

A Rows alternate background colors, but hover effect changes text color instead of background.

B Only the striped effect works; hover effect is ignored.

C Only the hover effect works; striped rows are not visible.

D Rows alternate background colors, and the hovered row changes background color on mouse hover.

💡 Hint

Both classes add different background color effects.

When both classes are used, rows have alternating backgrounds, and the hovered row changes background color on mouse hover, combining both effects.

❓ accessibility

expert

Which ARIA role and attribute best improve accessibility for a Bootstrap table with striped and hover effects?

To make a Bootstrap table with .table-striped and .table-hover accessible for screen readers and keyboard users, which ARIA role and attribute combination is most appropriate?

Bootsrap

<table class="table table-striped table-hover" ... >
  ...
</table>

A Add <code>role="grid"</code> and <code>aria-rowcount</code> to indicate row count.

B Add <code>aria-live="polite"</code> to announce row changes dynamically.

C Add <code>role="presentation"</code> to hide the table from assistive tech.

D Add <code>role="list"</code> to treat the table as a list.

💡 Hint

Think about roles that describe tables and their structure.

Using role="grid" helps assistive technologies understand the table as a grid of data, and aria-rowcount informs about the number of rows, improving navigation and context.

Practice

1. What does the table-striped class do in a Bootstrap table?

easy

A. Adds alternating background colors to table rows for easier reading.

B. Highlights the row when you hover the mouse over it.

C. Makes the table borders thicker.

D. Changes the font style of the table text.

Solution

1. Step 1: Understand the purpose of table-striped

   The table-striped class adds alternating background colors to rows, making it easier to read data across the table.

2. Step 2: Differentiate from other classes

   The table-hover class highlights rows on mouse hover, which is different from table-striped.

3. Final Answer:

   Adds alternating background colors to table rows for easier reading. -> Option A

4. Quick Check:

   Striped = alternating row colors [OK]

Hint: Striped means alternating colors on rows [OK]

Common Mistakes:

• Confusing striped with hover effect
• Thinking it changes font or borders
• Assuming it highlights on mouse hover

2. Which is the correct way to add both striped and hover effects to a Bootstrap table?

easy

A. <table class='table-striped-hover'>

B. <table class='table-hover table-striped'>

C. <table class='striped hover'>

D. <table class='table table-striped table-hover'>

Solution

1. Step 1: Check Bootstrap class syntax

   Bootstrap requires the base table class plus additional classes separated by spaces, like table-striped and table-hover.

2. Step 2: Validate correct class order and spelling

   <table class='table table-striped table-hover'> correctly uses class='table table-striped table-hover'. Order doesn't matter but all classes must be present and spelled correctly.

3. Final Answer:

   <table class='table table-striped table-hover'> -> Option D

4. Quick Check:

   Use base table plus both classes [OK]

Hint: Always include base 'table' class with modifiers [OK]

Common Mistakes:

• Omitting the base 'table' class
• Combining classes without spaces
• Using incorrect class names

3. Given this HTML snippet, what visual effect will the table have?

<table class='table table-striped table-hover'>
  <tr><td>Row 1</td></tr>
  <tr><td>Row 2</td></tr>
  <tr><td>Row 3</td></tr>
</table>

medium

A. Rows alternate background colors and highlight on mouse hover.

B. Rows have no background color but highlight on mouse hover.

C. Rows alternate background colors but do not highlight on hover.

D. Table has no special background or hover effects.

Solution

1. Step 1: Identify classes used

   The table uses table-striped and table-hover classes together.

2. Step 2: Understand combined effects

   table-striped adds alternating row colors, and table-hover highlights the row under the mouse pointer.

3. Final Answer:

   Rows alternate background colors and highlight on mouse hover. -> Option A

4. Quick Check:

   Striped + Hover = alternating colors + highlight [OK]

Hint: Both classes combine their effects visually [OK]

Common Mistakes:

• Thinking only one effect applies
• Ignoring hover effect
• Confusing hover with striped effect

4. What is wrong with this table code if the hover effect does not work?

<table class='table table-striped hover'>
  <tr><td>Data</td></tr>
</table>

medium

A. The table-striped class disables hover effect.

B. The table class is missing.

C. The class should be table-hover, not just hover.

D. Hover effect requires JavaScript to work.

Solution

1. Step 1: Check class names

   The class hover alone is not a valid Bootstrap class for hover effect.

2. Step 2: Correct class for hover effect

   The correct class is table-hover, which must be used with the base table class.

3. Final Answer:

   The class should be table-hover, not just hover. -> Option C

4. Quick Check:

   Hover effect needs table-hover class [OK]

Hint: Hover class must be 'table-hover' exactly [OK]

Common Mistakes:

• Using 'hover' instead of 'table-hover'
• Omitting 'table' base class
• Assuming hover needs JavaScript

5. You want a table that has striped rows, highlights on hover, and also makes the header row stand out with a dark background. Which is the best way to achieve this using Bootstrap classes?

hard

A. <table class='table table-striped table-hover'> <thead class='table-header-dark'> ... </thead> </table>

B. <table class='table table-striped table-hover'> <thead class='table-dark'> ... </thead> </table>

C. <table class='table table-striped table-hover'> <thead class='thead-dark'> ... </thead> </table>

D. <table class='table table-striped table-hover table-dark'> ... </table>

Solution

1. Step 1: Combine striped and hover classes on table

   Use table-striped and table-hover with the base table class for row effects.

2. Step 2: Use correct class for dark header

   Bootstrap uses table-dark on the <thead> element to style the header with a dark background.

3. Step 3: Verify other options

   table-dark on the whole table changes entire table style, not just header. thead-dark is deprecated in Bootstrap 5+. table-header-dark is not a valid class.

4. Final Answer:

   <table class='table table-striped table-hover'> <thead class='table-dark'> ... </thead> </table> -> Option B

5. Quick Check:

   Use table-dark on thead for dark header [OK]

Hint: Dark header uses 'table-dark' on thead element [OK]

Common Mistakes:

• Applying 'table-dark' to whole table instead of header
• Using deprecated 'thead-dark' class
• Inventing non-existent classes like 'table-header-dark'