Horizontal collapse in Bootsrap - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a button that toggles a horizontal collapse.

Bootsrap

<button class="btn btn-primary" type="button" data-bs-toggle="[1]" data-bs-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
  Toggle Width Collapse
</button>

Drag options to blanks, or click blank then click option'

Acollapse

Bdropdown

Cmodal

Dtooltip

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'modal' or 'dropdown' instead of 'collapse' causes the toggle not to work.

Leaving the attribute empty means no toggle behavior.

The data-bs-toggle="collapse" attribute tells Bootstrap to toggle the collapse behavior on the target element.

2fill in blank

medium

Complete the code to make the collapsible content expand horizontally.

Bootsrap

<div class="collapse [1]" id="collapseExample">
  <div class="card card-body">
    This content collapses horizontally.
  </div>
</div>

Drag options to blanks, or click blank then click option'

Acollapse-vertical

Bshow

Ccollapse-horizontal

Dfade

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'show' only makes the content visible but does not change collapse direction.

Using 'fade' adds animation but not horizontal collapse.

The class collapse-horizontal makes the collapse expand and collapse horizontally instead of vertically.

3fill in blank

hard

Fix the error in the button code to properly toggle horizontal collapse.

Bootsrap

<button class="btn btn-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#[1]" aria-expanded="false" aria-controls="collapseWidthExample">
  Toggle Width Collapse
</button>

Drag options to blanks, or click blank then click option'

AcollapseWidthExample

BcollapseWidth

Attempts:

3 left

💡 Hint

Common Mistakes

Misspelling the ID in the data-bs-target attribute.

Omitting the '#' in the data-bs-target value.

The data-bs-target must exactly match the ID of the collapsible element, which is collapseWidthExample.

4fill in blank

hard

Fill both blanks to create a horizontal collapse with a button that toggles it.

Bootsrap

<button class="btn btn-info" type="button" data-bs-toggle="[1]" data-bs-target="#collapseWidthExample" aria-expanded="false" aria-controls="collapseWidthExample">
  Toggle Width Collapse
</button>
<div class="collapse [2]" id="collapseWidthExample">
  <div class="card card-body" style="width: 300px;">
    This is some placeholder content for a horizontal collapse.
  </div>
</div>

Drag options to blanks, or click blank then click option'

Acollapse

Bmodal

Ccollapse-horizontal

Dfade

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'modal' or 'fade' instead of 'collapse' for toggle.

Forgetting to add 'collapse-horizontal' class to the collapsible div.

The button must toggle collapse, and the collapsible div must have the collapse-horizontal class to collapse horizontally.

5fill in blank

hard

Fill all three blanks to create a horizontal collapse with a button and set the width style.

Bootsrap

<button class="btn btn-warning" type="button" data-bs-toggle="[1]" data-bs-target="#collapseWidthExample" aria-expanded="false" aria-controls="collapseWidthExample">
  Toggle Width Collapse
</button>
<div class="collapse [2]" id="collapseWidthExample">
  <div class="card card-body" style="width: [3];">
    This is some placeholder content for a horizontal collapse.
  </div>
</div>

Drag options to blanks, or click blank then click option'

Acollapse

Bcollapse-horizontal

C300px

Dfade

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'fade' instead of 'collapse' for toggle.

Not setting the width style, so horizontal collapse is not visible.

Forgetting the 'collapse-horizontal' class.

The button toggles collapse, the div uses collapse-horizontal for horizontal effect, and the width is set to 300px for visible horizontal size.

Practice

1. What does the collapse-horizontal class do in Bootstrap?

easy

A. It makes the collapsible content slide left or right instead of up or down.

B. It changes the color of the collapsible content.

C. It disables the collapse functionality.

D. It makes the collapsible content slide up or down.

Solution

1. Step 1: Understand the role of collapse-horizontal

   This class changes the collapse animation direction from vertical (up/down) to horizontal (left/right).

2. Step 2: Compare with default collapse behavior

   By default, Bootstrap collapses content vertically. Adding collapse-horizontal changes this to horizontal sliding.

3. Final Answer:

   It makes the collapsible content slide left or right instead of up or down. -> Option A

4. Quick Check:

   collapse-horizontal = horizontal slide [OK]

Hint: Remember: horizontal means left-right slide, not up-down [OK]

Common Mistakes:

• Thinking it changes color or disables collapse
• Confusing horizontal with vertical collapse
• Assuming it works without Bootstrap JS

2. Which of the following is the correct way to start a horizontal collapse in Bootstrap?

easy

A. <div class='collapse-vertical' id='myCollapse'></div>

B. <div class='horizontal-collapse' id='myCollapse'></div>

C. <div class='collapse-horizontal'></div>

D. <div class='collapse collapse-horizontal' id='myCollapse'></div>

Solution

1. Step 1: Identify correct Bootstrap classes for horizontal collapse

   The correct classes are collapse and collapse-horizontal together on the element.

2. Step 2: Check the syntax of options

   <div class='collapse collapse-horizontal' id='myCollapse'></div> uses both classes and includes an id for toggling, which is required for Bootstrap collapse to work.

3. Final Answer:

   <div class='collapse collapse-horizontal' id='myCollapse'></div> -> Option D

4. Quick Check:

   Use both collapse and collapse-horizontal classes [OK]

Hint: Always combine collapse with collapse-horizontal for horizontal effect [OK]

Common Mistakes:

• Using only collapse-horizontal without collapse
• Using wrong class names like collapse-vertical
• Missing the id attribute for toggling

3. Given this code snippet, what will happen when the button is clicked?

<button class='btn btn-primary' type='button' data-bs-toggle='collapse' data-bs-target='#collapseExample'>Toggle</button>
<div class='collapse collapse-horizontal' id='collapseExample' style='width: 200px;'>Content</div>

medium

A. The content slides vertically, expanding or collapsing height.

B. The content slides horizontally, expanding or collapsing width.

C. Nothing happens because width is set inline.

D. The button causes a page reload.

Solution

1. Step 1: Analyze the collapse classes and attributes

   The div has collapse and collapse-horizontal classes, so it will collapse horizontally.

2. Step 2: Understand the effect of inline width

   The inline style sets width to 200px, which is necessary for horizontal collapse to know the size to expand or collapse.

3. Final Answer:

   The content slides horizontally, expanding or collapsing width. -> Option B

4. Quick Check:

   collapse-horizontal + width = horizontal slide [OK]

Hint: Horizontal collapse needs width set to animate properly [OK]

Common Mistakes:

• Assuming vertical slide happens by default
• Thinking inline width disables collapse
• Expecting page reload on button click

4. What is wrong with this horizontal collapse code?

<div class='collapse-horizontal' id='myCollapse'>Content</div>
<button data-bs-toggle='collapse' data-bs-target='#myCollapse'>Toggle</button>

medium

A. Missing the main collapse class on the div.

B. Button is missing the type='button' attribute.

C. The id attribute should be on the button, not the div.

D. The collapse-horizontal class should be on the button.

Solution

1. Step 1: Check required classes for collapse

   Bootstrap requires the collapse class on the collapsible element for functionality.

2. Step 2: Identify missing class in code

   The div only has collapse-horizontal but lacks collapse, so it won't collapse properly.

3. Final Answer:

   Missing the main collapse class on the div. -> Option A

4. Quick Check:

   collapse class is mandatory for collapse [OK]

Hint: Always include collapse class with collapse-horizontal [OK]

Common Mistakes:

• Forgetting the collapse class
• Misplacing id attribute
• Assuming button needs collapse-horizontal

5. You want to create a horizontal collapse panel that starts collapsed and expands to 300px wide when toggled. Which code snippet correctly achieves this with accessibility in mind?

hard

A. <button class='btn btn-info' type='button' data-bs-toggle='collapse' data-bs-target='#panel'>Toggle Panel</button>
<div class='collapse collapse-horizontal' id='panel' style='height: 300px;'>Panel Content</div>

B. <button class='btn btn-info' data-toggle='collapse' data-target='#panel'>Toggle Panel</button>
<div class='collapse-horizontal' id='panel' style='width: 300px;'>Panel Content</div>

C. <button class='btn btn-info' type='button' data-bs-toggle='collapse' data-bs-target='#panel' aria-expanded='false' aria-controls='panel'>Toggle Panel</button>
<div class='collapse collapse-horizontal' id='panel' style='width: 300px;'>Panel Content</div>

D. <button class='btn btn-info' type='button' data-bs-toggle='collapse' data-bs-target='#panel' aria-expanded='true' aria-controls='panel'>Toggle Panel</button>
<div class='collapse collapse-horizontal' id='panel' style='width: 300px;'>Panel Content</div>

Solution

1. Step 1: Check button attributes for accessibility

   <button class='btn btn-info' type='button' data-bs-toggle='collapse' data-bs-target='#panel' aria-expanded='false' aria-controls='panel'>Toggle Panel</button>
   <div class='collapse collapse-horizontal' id='panel' style='width: 300px;'>Panel Content</div>

   includes aria-expanded='false' and aria-controls='panel', which help screen readers understand the toggle state.

2. Step 2: Verify collapse classes and styles

   The div has both collapse and collapse-horizontal classes and sets width to 300px, which is correct for horizontal collapse.

3. Final Answer:

   <button class='btn btn-info' type='button' data-bs-toggle='collapse' data-bs-target='#panel' aria-expanded='false' aria-controls='panel'>Toggle Panel</button> <div class='collapse collapse-horizontal' id='panel' style='width: 300px;'>Panel Content</div> -> Option C

4. Quick Check:

   Use aria attributes + collapse + collapse-horizontal + width [OK]

Hint: Add aria-expanded and aria-controls for accessible toggles [OK]

Common Mistakes:

• Using data-toggle instead of data-bs-toggle
• Setting height instead of width for horizontal collapse
• Missing aria attributes for accessibility