Dismissible alerts in Bootsrap - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a dismiss button to the alert.

Bootsrap

<div class="alert alert-warning alert-dismissible fade show" role="alert">
  Warning! This is a dismissible alert.
  <button type="button" class="btn-close" data-bs-dismiss="[1]" aria-label="Close"></button>
</div>

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

Amodal

Bdropdown

Calert

Dcollapse

Attempts:

3 left

💡 Hint

Common Mistakes

Using data-bs-dismiss="modal" instead of "alert"

Forgetting the data-bs-dismiss attribute

Using incorrect component names like "dropdown"

The data-bs-dismiss attribute should be set to "alert" to make the button dismiss the alert box.

2fill in blank

medium

Complete the code to make the alert fade out smoothly when dismissed.

Bootsrap

<div class="alert alert-success alert-dismissible [1] show" role="alert">
  Success! You can close this alert.
  <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>

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

Afade

Bvisible

Chidden

Dcollapse

Attempts:

3 left

💡 Hint

Common Mistakes

Using "collapse" class which is for different components

Omitting the fade class so alert disappears abruptly

Using "hidden" or "visible" which are not Bootstrap classes

Adding the "fade" class makes the alert fade out smoothly when dismissed.

3fill in blank

hard

Fix the error in the button to properly dismiss the alert.

Bootsrap

<div class="alert alert-danger alert-dismissible fade show" role="alert">
  Danger! This alert can be dismissed.
  <button type="button" class="btn-close" data-bs-dismiss="[1]" aria-label="Close"></button>
</div>

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

Aalert

Bmodal

Cbutton

Dtoast

Attempts:

3 left

💡 Hint

Common Mistakes

Using data-bs-dismiss="modal" or "toast" which do not dismiss alerts

Using data-bs-dismiss="button" which is invalid

The data-bs-dismiss attribute must be set to "alert" to dismiss the alert component correctly.

4fill in blank

hard

Fill both blanks to create a dismissible info alert with fade effect.

Bootsrap

<div class="alert alert-info alert-dismissible [1] show" role="alert">
  Info alert with fade effect.
  <button type="button" class="btn-close" data-bs-dismiss="[2]" aria-label="Close"></button>
</div>

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

Afade

Bmodal

Calert

Dcollapse

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up component names in data-bs-dismiss

Forgetting the fade class for smooth animation

The "fade" class adds the fade effect and data-bs-dismiss="alert" makes the button dismiss the alert.

5fill in blank

hard

Fill all three blanks to create a dismissible primary alert with fade and show classes.

Bootsrap

<div class="alert alert-primary alert-dismissible [1] [2]" role="alert">
  Primary alert with dismiss button.
  <button type="button" class="btn-close" data-bs-dismiss="[3]" aria-label="Close"></button>
</div>

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

Ahidden

Bshow

Calert

Dfade

Attempts:

3 left

💡 Hint

Common Mistakes

Using "hidden" instead of "show" for visibility

Omitting the fade class for animation

Wrong data-bs-dismiss value like "modal"

The "fade" and "show" classes enable fade animation and visibility, and data-bs-dismiss="alert" makes the button dismiss the alert.

Practice

1. What is the main purpose of a dismissible alert in Bootstrap?

easy

A. To make alerts appear with animation only

B. To allow users to close alert messages and keep the page clean

C. To change the alert color automatically

D. To disable all alerts on the page

Solution

1. Step 1: Understand the role of dismissible alerts

   Dismissible alerts let users close alert messages so the page looks tidy and less cluttered.

2. Step 2: Compare options with this purpose

   Only To allow users to close alert messages and keep the page clean describes this purpose correctly; others describe unrelated features.

3. Final Answer:

   To allow users to close alert messages and keep the page clean -> Option B

4. Quick Check:

   Dismissible alerts = user can close alerts [OK]

Hint: Dismissible means user can close it [OK]

Common Mistakes:

• Thinking dismissible changes alert color
• Confusing dismissible with animation only
• Believing dismissible disables alerts

2. Which of the following is the correct Bootstrap class to make an alert dismissible?

easy

A. alert alert-dismissible

B. alert dismissible-alert

C. alert dismiss-alert

D. alert closeable

Solution

1. Step 1: Recall Bootstrap's dismissible alert class

   The official class to make an alert dismissible is alert-dismissible combined with alert.

2. Step 2: Check each option

   Only alert alert-dismissible uses the correct class names exactly as Bootstrap requires.

3. Final Answer:

   alert alert-dismissible -> Option A

4. Quick Check:

   Dismissible alert class = alert-dismissible [OK]

Hint: Look for exact class name alert-dismissible [OK]

Common Mistakes:

• Using incorrect class names like dismissible-alert
• Missing the alert class
• Using non-Bootstrap class names

3. What will happen when the close button inside this alert is clicked?

<div class="alert alert-warning alert-dismissible fade show" role="alert">
  Warning! Check your input.
  <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>

medium

A. The alert will reload the page

B. Nothing will happen because the button is missing JavaScript

C. The alert text will change to 'Closed!'

D. The alert will fade out and disappear from the page

Solution

1. Step 1: Understand the alert structure and classes

   The alert uses alert-dismissible, fade, and show classes with a close button having data-bs-dismiss="alert".

2. Step 2: Know Bootstrap's behavior on close button click

   Clicking the button triggers Bootstrap's JavaScript to fade out and remove the alert from the page.

3. Final Answer:

   The alert will fade out and disappear from the page -> Option D

4. Quick Check:

   Close button with data-bs-dismiss = alert hides alert [OK]

Hint: Close button with data-bs-dismiss hides alert [OK]

Common Mistakes:

• Thinking alert text changes on close
• Assuming no effect without extra JS code
• Believing page reloads on close

4. Identify the error in this dismissible alert code:

<div class="alert alert-success alert-dismissible" role="alert">
  Success! Your form was submitted.
  <button type="button" class="btn-close" aria-label="Close"></button>
</div>

medium

A. The alert should not have alert-dismissible class

B. Alert is missing the fade class

C. Missing data-bs-dismiss="alert" on the close button

D. The button type should be submit

Solution

1. Step 1: Check the close button attributes

   The close button must have data-bs-dismiss="alert" to trigger alert dismissal.

2. Step 2: Verify other classes and attributes

   The alert-dismissible class is correct, fade is optional, and button type should be button, not submit.

3. Final Answer:

   Missing data-bs-dismiss="alert" on the close button -> Option C

4. Quick Check:

   Close button needs data-bs-dismiss attribute [OK]

Hint: Close button must have data-bs-dismiss="alert" [OK]

Common Mistakes:

• Forgetting data-bs-dismiss attribute
• Thinking fade class is mandatory
• Using wrong button type

5. You want to create a dismissible alert that automatically disappears after 5 seconds but also allows manual close. Which approach is correct?

hard

A. Use a dismissible alert with btn-close and add JavaScript to remove it after 5 seconds

B. Add data-bs-auto-dismiss="5000" attribute to the alert div

C. Use only fade and show classes without close button

D. Set the alert class to alert-auto-close and no JavaScript needed

Solution

1. Step 1: Understand Bootstrap's dismissible alert features

   Bootstrap does not provide automatic dismiss with a data attribute; manual close requires btn-close and data-bs-dismiss="alert".

2. Step 2: Implement auto-dismiss with JavaScript

   To auto-remove after 5 seconds, add JavaScript code that removes the alert element after a timeout, while keeping manual close button.

3. Final Answer:

   Use a dismissible alert with btn-close and add JavaScript to remove it after 5 seconds -> Option A

4. Quick Check:

   Auto-dismiss needs JS plus dismissible alert [OK]

Hint: Auto-dismiss requires JS plus dismissible alert [OK]

Common Mistakes:

• Assuming data-bs-auto-dismiss exists
• Omitting the close button for manual close
• Using non-existent alert-auto-close class