Book Image

Mastering ServiceNow Scripting

By : Andrew Kindred
Book Image

Mastering ServiceNow Scripting

By: Andrew Kindred

Overview of this book

Industry giants like RedHat and NetApp have adopted ServiceNow for their operational needs, and it is evolving as the number one platform choice for IT Service management. ServiceNow provides their clients with an add-on when it comes to baseline instances, where scripting can be used to customize and improve the performance of instances. It also provides inbuilt JavaScript API for scripting and improving your JavaScript instance. This book will initially cover the basics of ServiceNow scripting and the appropriate time to script in a ServiceNow environment. Then, we dig deeper into client-side and server-side scripting using JavaScipt API. We will also cover advance concepts like on-demand functions, script actions, and best practices. Mastering ServiceNow Scripting acts as an end-to-end guide for writing, testing, and debugging scripts of ServiceNow. We cover update sets for moving customizations between ServiceNow instances, jelly scripts for making custom pages, and best practices for all types of script in ServiceNow. By the end of this book, you will have hands-on experience in scripting ServiceNow using inbuilt JavaScript API.
Table of Contents (18 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

Update set pitfalls


Update sets are a great way to move configurations between instances. However, when using update sets, there are some pitfalls that can easily be fallen into.

The main issue that most developers face is what customization will be added to an update set. Not all changes to tables are added to update sets. Whether changes to a table are added to an update set or not depends on whether the records in the table are considered data or not. Tables that are considered as data are not added to an update set; as otherwise, update sets would be filled with unnecessary records. 

For example, if the incident table was included in update sets, any incidents modified or created in a development instance would be moved across to a production instance, which would not be a good idea. Most tables are included or excluded from update sets as you would expect, but some are not always obvious, so it is worth checking.

To avoid missing updates in our update sets or including updates we do not...