Book Image

Web Developer's Reference Guide

By : Joshua Johanan, Talha Khan, Ricardo Zea
Book Image

Web Developer's Reference Guide

By: Joshua Johanan, Talha Khan, Ricardo Zea

Overview of this book

This comprehensive reference guide takes you through each topic in web development and highlights the most popular and important elements of each area. Starting with HTML, you will learn key elements and attributes and how they relate to each other. Next, you will explore CSS pseudo-classes and pseudo-elements, followed by CSS properties and functions. This will introduce you to many powerful and new selectors. You will then move on to JavaScript. This section will not just introduce functions, but will provide you with an entire reference for the language and paradigms. You will discover more about three of the most popular frameworks today—Bootstrap, which builds on CSS, jQuery which builds on JavaScript, and AngularJS, which also builds on JavaScript. Finally, you will take a walk-through Node.js, which is a server-side framework that allows you to write programs in JavaScript.
Table of Contents (22 chapters)
Web Developer's Reference Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
9
JavaScript Expressions, Operators, Statements, and Arrays
Index

Image rendering and orientation


Making sure images display correctly is not only a designer's responsibility, we as web designers and developers also have a say in how images behave and display under particular circumstances.

Let's see how to change the orientation and rendering quality of images with CSS.

image-orientation

The image-orientation CSS property defines the rotation that we can apply to an image, and it looks like this:

image-orientation: flip;

Description

Many images contain information about the settings used to take a picture, such as ISO speed, aperture, shutter speed, camera model, white balance, date and time, and so on. This information is called EXIF Data, and CSS uses this data for image orientation purposes. It also supports one or two values in a single declaration.

The image-orientation property supports two keyword values and an angle value: from-image, flip, and an angle value.

  • from-image: The image is rotated using the EXIF Data contained in the image.

  • flip: The image...