Book Image

Mastering ServiceNow - Second Edition

Book Image

Mastering ServiceNow - Second Edition

Overview of this book

ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done. The book steps through the main aspects of the ServiceNow platform, from the ground up. It starts by exploring the core architecture of ServiceNow, including building the right data structure. To add business logic and control data, and interactivity to user interaction, you will be shown how to code on both server and the client. You will then learn more about the power of tasks, events and notifications. The book will then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Furthermore, you will learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. You will then be shown how to package your applications and changes, so they can be installed elsewhere and ways to maintain them easily. If you wish to create an alternative simple interface, then explore ways to make ServiceNow beautiful using Service Portal. By the end of the book, you will know the fundamentals of the ServiceNow platform, helping you be a better ServiceNow System Administrator or developer.
Table of Contents (18 chapters)
Mastering ServiceNow Second Edition
Credits
Notice
About the Author
About the Reviewer
www.PacktPub.com
Preface

Rhino - the JavaScript engine powering ServiceNow


JavaScript needs to be interpreted and executed in order for it to do useful work. The functionality that does this in each web browser is the JavaScript engine: it understands the code written on the web page and executes it to provide the functionality that the developer expects.

The ServiceNow server-side platform uses the Rhino JavaScript engine, which is managed by the Mozilla Foundation, the maintainers of Firefox. Rhino itself is written in Java, which provides a hint of the backend platform code ServiceNow is written in. Rhino provides a full implementation of the language, with the exception of some objects that only make sense to the client. It's relatively complete and standard-compliant, though ServiceNow has made some changes to make scripting more forgiving (including not altering on missing if the function doesn't exist.) All versions of ServiceNow prior to Helsinki include a version of Rhino that supports up to version ECMAScript...