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

Background scripts


Background scripts are server-side scripts that administrators can immediately run on the ServiceNow platform. A background script cannot be saved and does not exist as a record. However, they can be extremely useful for trialing scripts out and fixing one-off issues with an instance.

To start creating a background script, you simply need to select the Scripts - Background module in the System Definition application. This brings up a large box for the developer to write their code into. If you have administrator access and you cannot see the module, there is a system property that can be set that means an elevated privilege is required to access background scripts. If this is the case, this usually means you need the security_admin role to access background scripts.

Because background scripts grant the ability to run any JavaScript on the platform, this module is often locked down more securely for security purposes.

There are a few choices and buttons that appear under the...