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 (18 chapters)
Bootstrap 4 By Example
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Browser compatibility


The Bootstrap framework supports the most recent versions of the most used browsers. However, depending on the browser, the elements' rendering might look a little different from others, such as in the Chrome and Firefox Linux versions.

Internet Explorer's (IE) old versions do not have some properties from CSS3 and HTML5 that are used in the framework, so be aware of this when supporting these browsers. The following table presents the official browser compatibility.

Also, with the new version 4 of the framework, some compatibilities have been dropped. They decided to drop the support that existed for IE8, since it was dragging down the addition of new features, and now Bootstrap is able to take advantage of the use of some new CSS features.

With regard to this, version 4 moved from pixels to rems and ems measures to make responsive and resizing easier, and with that, they dropped support for iOS 6 as well:

 

Chrome

Firefox

Internet Explorer

Opera

Safari

Android

Yes

Yes

N/A

No

N/A

iOS

Yes

N/A

N/A

No

Yes (iOS 7 + for v4)

OS X

Yes

Yes

N/A

Yes

Yes

Windows

Yes

Yes

Yes (IE9 + for v4)

Yes

No

Tip

The meaning of em and rem

The units em and rem have moved from trending to reality! They are enforced as present in our context and have now gained the support of Bootstrap. The main difference between em and rem is that they are relative unit metrics, while pixels are not. em is a unit relative to the parent font size and rem is a unit relative to the root element, perfectly fitting this responsivity development context.