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

Business rule best practices

Business rule best practices are, to a large extent, about running business rules at the correct time. As we have already discovered, a business rule can be run at different times based on when the form is saved or the action is taken to the record. 

This means that it is important to make sure that a business rule that is created is running in the most efficient way. Using business rules correctly, we can avoid problems such as updating the same record twice and running script when it is not required.

We'll start with looking at the check boxes on a business rule, as shown in Figure 10.3:

Figure 10.3: Business rule check boxes

Insert and Update are the most frequently used, and they are often used together. However, it is a best practice to ensure that you make your business rule only run when necessary. Do not tick both boxes just to cover all possibilities; if your business rule is not needed when a record is inserted or updated then leave that tick box unchecked...