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

UI macros

UI macros are scripts that can be included in UI pages and in other areas throughout the ServiceNow platform. By separating them out from individual UI pages, it makes them easy to reuse across the platform, too.

UI macros are seen throughout the ServiceNow platform, running the service catalog cart and approval summarizers. Let's have a look at how they are created.

A UI macro is quite a simple form, with only a few fields. First, we need to give our UI macro a name. After that, we can add a description, and then complete the XML field. The XML field is an XML type field and works in a very similar way to the HTML field on a UI page. We fill in the XML field with the Jelly script we want to run when this UI macro is run.

We are also given the same Jelly code that we are given when creating a new UI page in the XML field:

<?xml version="1.0" encoding="utf-8" ?>
<j:jelly trim="false" xmlns:j="jelly:core" xmlns:g="glide" xmlns:j2="null" xmlns:g2="null">