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

Script examples

The advanced server-side techniques we have seen can be used in a number of ways, and you will find advanced server-side scripting to be some of the most common in the ServiceNow platform.

Now that we have seen where to write our advanced server-side code, we can have a look at some further examples to solidify our understanding.

Let's have a look at a script include example first. We will write a script to return the active tasks of a requested item. This can be helpful for letting users know which tasks need to be completed for an item to be fulfilled.

First we will take a look at the script include code:

var item_utils = Class.create();
item_utils.prototype = {
    initialize: function() {

  getActiveTasks: function getActiveTasks(item) {

    var tasks = [];
    var task = new GlideRecord('sc_task');
    task.addQuery('request_item', item.sys_id);
    while ( {