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

Update set best practices

When using update sets, there are some best practices we can adhere to to ensure we avoid adding bad customizations to our production instance and use update sets to their full potential.

Firstly, it is always a good idea to check the updates contained in your update set before completing it. Sometimes a developer can inadvertently add an update they did not mean to to their update set. Therefore, it is always a good idea to check each individual update contained in your update set. In particular, pay special attention to any updates where the action is DELETE, as this can be harder to undo.

We can see some example updates in an update set in Figure 11.6:

Figure 11.6: Update set containing sample updates

We can see the updates in this update set in the Customer Updates tab of the related lists. We can see three updates in the update set example, including two client scripts and a business rule. We need to ensure that every customer update we see is a change we want...