Book Image

ServiceNow: Building Powerful Workflows

By : Tim Woodruff, Martin Wood, Ashish Rudra Srivastava
Book Image

ServiceNow: Building Powerful Workflows

By: Tim Woodruff, Martin Wood, Ashish Rudra Srivastava

Overview of this book

ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications, giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done. This course will show you how to put important ServiceNow features to work in the real world. We will introduce key concepts and examples on managing and automating IT services, and help you build a solid foundation towards this new approach. You will then learn more about the power of tasks, events, and notifications. We’ll then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Further on, you’ll learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. At the end of this course, you will acquire immediately applicable skills to rectify everyday problems encountered on the ServiceNow platform. The course provides you with highly practical content explaining ServiceNow from the following Packt books: 1. Learning ServiceNow 2. ServiceNow Cookbook 3. Mastering ServiceNow, Second Edition
Table of Contents (39 chapters)
Title Page
Credits
Preface
Free Chapter
1
Module 1
36
Bibliography

Running client-side scripts


It would be inappropriate to have any chapter on client-side JavaScript without having a Hello, world! example at some point.

ServiceNow has a very simple JavaScript executor that is the equivalent of Background Scripts, but for the browser. On almost any page, pressing Ctrl + Shift + J will launch the JavaScript execution window:

Let's run some code:

alert('Hello, world!'); 

Once you press the Run my code button, you should see the little pop-up alert box, as you may expect.

Your web browser executes the very simple JavaScript that you put in the window. Virtually every browser has a JavaScript console that provides the same functionality, which you will probably prefer, but it is helpful that ServiceNow gives you a simple alternative for every browser.

 

Scope on the client

The JavaScript executor will always run code outside of any scope. But as we journey through the platform, we'll find several places where only certain functionality is allowed, just like the server...