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

Scheduled jobs

Scheduled jobs are a way of generating a report or record and automatically running a script. Creating a report or record is a configuration and does not require scripting. What we are interested in for scheduled jobs is the ability to automatically run a script.

A scheduled job is a helpful way to run a script at a time of your choosing. This can be an overnight job or a script that can run frequently, say, every hour. In my experience, running script out of hours is one of the main benefits and uses of a scheduled job. Common uses are preparing data for users first thing in the morning, or to remove old data.

When creating a scheduled job, we set the frequency of the scheduled job by using the run field. The different time options in this field give the developer different fields to fill in to schedule the script execution appropriately. If the On Demand option is picked, the script will only run if the Execute Now button is pressed.

In addition to the schedule, we can also...