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
About the Author
About the Reviewer

Customizing and extending the platform

Sometimes, administrators want to perform manipulations that GlideForm cannot do. This might include supporting additional events, such as onmouseover, or altering the layout of the page. Although I'll tell you how you can achieve this, I recommend that you don't use this technique in your production instance!


This section assumes that you have a basic understanding of dynamic HTML.

Firing on more events

Client Scripts allow you to run code when a field changes or when the form is loaded or submitted. However, the browser can inform JavaScript code about many more events, such as zooming the view, moving a mouse, or dragging files.

One way is to create an onLoad client script that sets up these events manually. The following code uses some undocumented functions of the ServiceNow platform to run scripts when the mouse moves over the Departure field on the Reservation form. Let's try this out:

  1. Navigate to System Definition > Client Scripts. Then, click...