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ServiceNow Application Development

By : Gupta

4.1 (10)

Buy this Book

ServiceNow Application Development

4.1 (10)

By: Gupta

Buy this Book

Overview of this book

ServiceNow provides service management for every department in the enterprise, including IT, Human Resources, Facilities, Field Service, and more. This book focuses on all the steps required to develop apps and workflows for any of your business requirements using ServiceNow. You will start with the first module, which covers the basics of ServiceNow and how applications are structured; how you can customize the dashboard as required; and also how to create users. After you get used to the dashboard, you will move on to the next module, Applications and Tables, where you will learn about working with different tables and how you can create a scope other than the global scope for your application. The next module is Scripting and APIs, where you will learn Scripting in ServiceNow and use powerful APIs to develop applications. The final module, Administration Essentials, covers debugging, advanced database features, and scheduled script creation. By the end of the book you will have mastered creating organized and customer-friendly applications

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

Introduction to ServiceNow

Creating a developer account

Summary

User Administration

Creating a new user

Best practices for managing groups

Impersonating a user

Summary

Data Management

Database structure

Key table-management modules

Creating a table

Task table

Configuration management table

Extending the configuration table

Summary

Application Scopes

Application architecture

ServiceNow applications

Creating a new application

Creating application artifacts

Accessing information in different scopes

Summary

Modules, Forms, and Views

Creating a new module

Different module link types

Managing module order

Summary

Introduction to ServiceNow Scripting

Different script types

Execution order of scripts

Client-side Glide API

Server-side Glide API

Scripting in scoped applications

Summary

Client-Side Scripting

Client scripts

UI policies

UI scripts

Disabling client-side scripts

Summary

Server-Side Scripting

Business rules

Script includes

UI actions

Summary

Jelly Scripting

Jelly scripts

UI pages

UI macros

Summary

Events and Notifications

Events

Script actions

Notifications

Summary

Workflow Development

Workflow basics

Using workflow editor

Workflow activities

REST calls using a workflow

Summary

Debugging in ServiceNow

Syntax editor

Script Debugger

JavaScript Log

Field Watcher

Summary

Advanced Database Features

Relationships

Dictionary override

Database indexing

Table auditing

Restoring deleted records

Database rotation

Data archiving

Summary

Job Scheduling and Data Export-Import

Scheduled script execution

Exporting data

Importing data using Import Sets

Summary

Customer Reviews

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Field Watcher

The Field Watcher window, which is available as a tab in the JavaScript Log and Field Watcher window, is useful to monitor changes to values of a particular field when server-side or client-side scripts perform any action. To watch a field, as shown in the following screenshot, we can right-click on the field label in the form and select Watch Field:

The Field Watcher window will automatically show up, if it is not already active, when we watch a field:

The Field Watcher window can help monitor changes to the field from the following artifacts:

ACL
Business rule
Client script
Data lookup
Data policy
UI action
UI policy
Workflow activity
Reference qualifier

When we submit the form, if an ACL or business rule will act on the field or modify its value, we can see those details in the Field Watcher window as shown in the following screenshot: