Book Image

AngularJS by Example

By : Chandermani
Book Image

AngularJS by Example

By: Chandermani

Overview of this book

<p>AngularJS makes web JavaScript web development less painful and more organized – it’s unsurprising that today it’s one of the most popular tools in web development.</p> <p>AngularJS by Example helps you get started with this essential web development framework quickly and easily, guiding you through AngularJS by showing you how to create your own real-world applications. By adopting this approach, you can bridge the gap between learning and doing immediately, as you follow the examples to learn the impressive features of Angular and experience a radically simple–and powerful–approach to web development.</p> <p>You’ll begin by creating a simple Guess the Number game, which will help you get to grips with the core components of Angular, including its MVC architecture, and learn how each part interacts with one another. This will give you a solid foundation of knowledge from which you can begin to build more complex applications, such as a 7 minute workout app and an extended personal trainer app. By creating these applications yourself, you will find out how AngularJS manages client-server interactions and how to effectively utilize directives to develop applications further. You’ll also find information on testing your app with tools such as Jasmine, as well as tips and tricks for some of the most common challenges of developing with AngularJS.</p> <p>AngularJS by Example is a unique web development book that will help you get to grips with AngularJS and explore a powerful solution for developing single page applications.</p>
Table of Contents (15 chapters)
AngularJS by Example
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Displaying the remaining workout time using filters


It will be nice if we can tell the user the time left to complete the workout and not just the duration of every exercise. We can add a countdown timer somewhere in the exercise pane that shows the overall time remaining.

The approach that we are going to take here is to define a scope variable workoutTimeRemaining. This variable will be initialized with the total time at the start of the workout and will reduce with every passing second till it reaches zero.

Since workoutTimeRemaining is a numeric value but we want to display a timer in the format (hh:mm:ss), we need to do a conversion between the seconds data and the time format. AngularJS filters are a great option for implementing such features.

Creating a seconds-to-time filter

Instead of using a filter, we could implement the same logic in a method such as convertToTime(seconds) and bind this method to the UI using something like <h2>{{convertToTime(workoutTimeRemaining)}}</h2...