Updated May 10, 2023
Introduction to Bootstrap Interview Questions And Answers
Bootstrap is a CSS framework for building rich web applications with minimal effort. Bootstrap is an open-source toolkit that uses HTML, CSS, and JS.
Now, if you are looking for a job related to Bootstrap, you need to prepare for the 2023 Bootstrap Interview Questions. Every interview is different as per the various job profiles, but still, to clear the interview, you need to have a good and precise knowledge of Bootstrap. Here, we have prepared the critical Bootstrap Interview Questions and Answers to help you succeed in your interview.
Below are the 10 crucial Bootstrap Interview Questions and Answers frequently asked in an interview.
Part 1 – Bootstrap Interview Questions (Basic)
This first part covers basic Bootstrap Interview Questions and Answers
1. Why use Bootstrap?
Answer:
- It supports all web browsers like Internet Explorer, Google Chrome, Firefox, Opera, Safari, etc.
- It is a compelling front-end framework; mobile-first styles are installed with a bootstrap3 framework.
- It is elementary to start as one needs to have an idea of HTML and CSS only to work with it; prior knowledge in HTML and CSS is sufficient to start with Bootstrap. Bootstrap’s official site also holds good documentation.
- Bootstrap supports the building of highly reactive websites.
- Allows a various variety of templates for use.
- Bootstrap is an open-source framework.
2. Components of Bootstrap package?
Answer:
Following is the components of Bootstrap are as follows:
- Scaffolding: Grid System, link styles, and background form the basic structure of Bootstrap.
- CSS: Bootstrap withholds global CSS settings, HTML, extensible classes, and an advanced grid system.
- JavaScript Plugin: Bootstrap contains over a dozen custom jQuery plugins.
- Customize: Bootstrap’s components can be easily customized with jQuery plugins to get your very own version.
Let us move to the next Bootstrap Interview Questions And Answer.
3. Foundation vs Bootstrap, key differences?
Answer:
| Bootstrap | Foundation |
| – Numerous User interface components are supported by Bootstrap | – There are extremely few options for Foundation UI elements. |
| – Bootstraps use pixels | – Foundation uses REMs |
| – Both Desktop and mobile sites can be designed primarily with Bootstrap | – Foundation encourages to design of mobile-first |
| – Bootstrap support LESS as its preprocessor | – Foundation supports Sass and Compass as its preprocessor |
4. Explain the Bootstrap framework structure?
Answer:
The Bootstrap framework is a responsive front-end mobile development framework that allows users to create sites using its grid system effectively. It offers a highly responsive design that is easily customizable, and mobile sites can be built on top of the framework using the programming entities listed below.
- HTML5 markup
- CSS Styling
- Javascript
- Fonts
Content can be divided into 12 columns in this example for mobile measurements before being shrunk to 6, 4, 3, etc. Ease of style and making define the Bootstrap buttons with default classes available for images.
5. What is Breadcrumbs in Bootstrap?
Answer:
Breadcrumbs depict the navigational hierarchy of a site; separators in the order are automatically added by means of CSS.
Bootstrap breadcrumb used for,
- Documentation page
- Magazine
- ERP system
A breadcrumb in Bootstrap is simply an unordered list with a class of .breadcrumb.
Ex:
.breadcrumb > li + li:before {
color: #CCCCCC;
content: "/ ";
padding: 0 5px;
}Part 2 –Bootstrap Interview Questions (Advanced)
Let us now have a look at the advanced Bootstrap Interview Questions.
6. Why do we use Jumbotron in Bootstrap?
Answer:
Jumbotron is a user-attractive function of Bootstrap. It is a brilliant way to highlight the critical contents of a page. The content could be a slogan or a headline, or any other catchy element of the page. Jumbotron works by increasing the content of the landing page and also increasing the heading size of the content. To implement Jumbotron in a Bootstrap use:
Create a container <div> with the class of. Jumbotron
Ex: The example shows the wrapping up heading contents inside a div class Jumbotron container.
<div class="jumbotron">
<h1>Learn to Create Websites</h1>
<p>In today's world internet is the most popular way…</p>
<p><a href="#" class="btn btn-primary btn-lg">Learn more</a></p>
</div>7. Explain the types of lists supported by Bootstrap?
Answer: Lists supported by Bootstrap are as follows,
Definition lists − Evey list is, by default, introduced with a <dt> and <dd> tag element
- <dt> : definition term
- <dd> : corresponds to the definition of <dt>
Ordered lists − lie in sequential order and are prefixed by numerical values.
Unordered lists − Traditionally styled lists do not follow any specific order, and bullets can be easily customized. The list-inline class can be used to display all list items within a single line.
Let us move to the next Bootstrap Interview Questions And Answer.
8. Navigation bar in Bootstrap?
Answer:
These are a few sophisticated Bootstrap interview questions that are frequently asked. The Nav tag can be used to construct the navigation bar, which resembles the page’s header. Navbars and their contents are fluid by default, and the horizontal width can be scaled and controlled using Navigation containers.
Ex:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</nav>9. Would you tell me something about Glyphicons and how they are written in our code?
Answer:
Glyphicons are represented as typefaces that can be used as symbols or icons in web projects with ease. Because they offer visual clues and improve the user experience, buttons, form inputs, toolbars, and navigational elements frequently employ them. Glyphicons Halflings are not free-to-use entities and require licensing. Bootstrap includes more than 250 glyphs from the Glyphicons Halflings set.
Ex:
<p>Search icon: <span class="glyphicon glyphicon-search"></span></p>10. Describe a Bootstrap panel, Bootstrap well, and Bootstrap carousel?
Answer:
Bootstrap well: Adds a greyish-rounded background around the content; it is a container class. The .well-sm class for small wells and .well-lg class for large wells allows alternate the size of the well. The default well size is normal.
Ex:
<div class="well">Basic Well</div>Bootstrap panel: Bootstrap panels can enhance the visibility of site content by wrapping them up in a box. The panel class can be used to create these panels, and the content inside the panel can have a .panel-body class.
Ex :
<div class="panel panel-default">
<div class="panel-body">Look, I'm in a panel!</div>
</div>Bootstrap carousel: Adds a slider through which images, videos, and contents can be populated and sided for the users. It is a flexible, handy, and responsive way to add a carousel to our site.
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