Book Image

Bootstrap 4 By Example

Book Image

Bootstrap 4 By Example

Overview of this book

Bootstrap is a free, open source collection of tools that helps developers create websites or web applications. It provides a faster, easier, and less repetitive solution to designing and building applications. Before Bootstrap’s release, it was necessary to import a variety of libraries into your project that offered different components and features for web interface development. Plus with the increased popularity of smartphones there were lack of libraries that could handle the responsiveness of a web page. Bootstrap‘s existence let it quickly become famous as a front-end framework that offered a wide set of tools from page grid up to components that render a web page in the best possible way for any device. This book will be a tutorial covering various examples as well as step-by-step methodology to create interesting web applications using Bootstrap and to understand the front-end framework to its core. We begin with an introduction to the Bootstrap framework and setting up an environment to build a simple web page. We then cover the grid system, basic Bootstrap components, HTML elements, and customization components for responsive and mobile first development. This is presented by creating a beautiful Landing page sample. You will also learn how to create a web application like Twitter by using the full set of components offered in the framework. Finally, you will learn to create a dashboard web app, using Bootstrap to its finest potential including component customizations, event handling, and external library integration. All these examples are explained step-by-step and in depth, while covering the versions 3 and the most recent version 4 of Bootstrap. So, you will be in the state of the art for front-end development. By the end of this book, you will be familiar with the development of a plugin for the framework and Bootstrap’s world which is popular for fast paced front-end web development, used in countless projects all over the world, and now yours.
Table of Contents (13 chapters)
12
Index

Pop it all over


In some cases, you may want to show more information that does not fit in a simple tooltip component. For that, Bootstrap has created popovers, which are components that create small overlays of content to show detailed secondary information.

The popover plugin is an extension of the tooltip plugin, so if you are using separate plugins, you must load both to make it work. Also, just like tooltips, popovers cannot be activated simply through data attributes. You must call them via JavaScript to make them work.

Let's use a popover in our web app example, on the right-hand-side column, the one identified by div#who-follow. We will add the popover to the Follow buttons, and for that, we need to do two things. The first one is to change the <button> element to an <a> element and then add the popover markup.

Tip

Why do we need to change buttons to links in popover?

Actually, we don't have to change the buttons' markup; we will do that just because of cross-browser compatibility...