Bootstrap 5 vs 4 Differences Quiz: Migration Essentials Quiz

Explore essential differences between Bootstrap 5 and 4 with this quiz designed for developers seeking to update or migrate their projects. Enhance your understanding of new features, removed components, and syntax changes crucial for a smooth transition between Bootstrap versions.

1. jQuery Dependency Change

   Which of the following best describes how the JavaScript dependency on jQuery has changed when moving from Bootstrap 4 to Bootstrap 5?

   1. Bootstrap 5 recommends using jQuery for full functionality.
   2. Bootstrap 5 completely removes the requirement for jQuery.
   3. Bootstrap 5 only supports custom jQuery plugins.
   4. Bootstrap 5 requires a newer version of jQuery than Bootstrap 4.

   Explanation: Bootstrap 5 no longer requires jQuery for any of its JavaScript components, marking a significant shift from Bootstrap 4, which depended on jQuery. The option stating Bootstrap 5 requires a newer version is incorrect; there is no requirement at all. Suggesting it is recommended for full functionality is also false, as all features work without it. The last choice about custom plugins is misleading—Bootstrap 5 avoids jQuery entirely, even for plugins.

2. Icon Library Inclusion

   When comparing default icon options between Bootstrap 4 and 5, what is a major change developers must consider?

   1. Bootstrap 5 upgrades all icons to SVG automatically.
   2. Bootstrap 5 provides FontAwesome icons natively.
   3. Bootstrap 5 embeds PNG icons by default.
   4. Bootstrap 5 does not include a built-in icon library.

   Explanation: Bootstrap 5 no longer ships with a built-in icon library, whereas previous versions included an icon font. The answer about SVG upgrades is inaccurate; users must now add their preferred icon sets themselves. The statement about embedded PNG is incorrect, as no default image icons are supplied. The claim regarding FontAwesome is false, as no third-party icon collections are provided directly.

3. Grid System Updates

   In the Bootstrap 5 grid system, which new breakpoint has been added compared to Bootstrap 4, improving layout flexibility?

   1. xlx
   2. xxl
   3. sl
   4. xs

   Explanation: Bootstrap 5 introduces the 'xxl' breakpoint to better support very large screens, expanding responsiveness compared to Bootstrap 4. The 'xs' option is incorrect, as it has been dropped as a specific breakpoint. 'xlx' and 'sl' are not recognized options in either version and thus incorrect. Only 'xxl' reflects the new enhancement.

4. Form Layout Changes

   Which change in form element classes is significant when upgrading a form from Bootstrap 4 to Bootstrap 5?

   1. Input groups no longer require the input-group-prepend or input-group-append classes.
   2. Select elements must have the select-input class instead of form-select.
   3. Form controls now use the class form-control only, instead of custom-control.
   4. Checkboxes require the class form-check-label instead of btn-group-label.

   Explanation: Bootstrap 5 simplifies input groups by removing the need for input-group-prepend and input-group-append classes, consolidating their functionality. The first option about custom-control refers to a different change but is not as precise. The third refers to form-check-label, which was already present before. The fourth option incorrectly references a non-existent select-input class.

5. Dropped Components

   Which component has been completely dropped in Bootstrap 5 and is no longer supported compared to Bootstrap 4?

   1. Card Decks
   2. Modals
   3. Tabs
   4. Navbars

   Explanation: Bootstrap 5 removes the card-deck component, encouraging developers to use the grid system instead for similar layouts. Modals, navbars, and tabs are still supported in both versions, although their syntax or features may have been updated. Only card-deck is no longer maintained or available in Bootstrap 5.