Book Image

Learning ServiceNow. - Second Edition

5 (1)
Book Image

Learning ServiceNow. - Second Edition

5 (1)

Overview of this book

This book is an updated version of Learning ServiceNow, that will cover the new and updated features of the ServiceNow platform. It will show you how to put important ServiceNow features to work in the real world, while introducing key concepts via examples of managing and automating IT services. It'll help you build a solid foundation of knowledge, and will demonstrate how to effectively implement and configure modules within ServiceNow. We'll show you how to configure and administer your instance, and then move on to building strong user interfaces and creating powerful workflows. We also cover other key elements of ServiceNow, such as notifications, security, reporting, and custom development. You will learn how to improve and automate your business' workflow and processes. By the end of this book, you will be able to successfully configure and manage ServiceNow like a pro.
Table of Contents (19 chapters)
Learning ServiceNow Second Edition
Contributors
Preface
Index

Client-side APIs


The client-side Glide API is partly a subset of the server-side API, but it also provides APIs for dealing with forms and lists. These APIs allow for the control and manipulation of the behavior of elements of the ServiceNow interface, and interaction with the database, user, and session information.

Many client-side APIs don't provide constructor methods, or require instantiation. For example, rather than declaring a new instance of the GlideUser class, we simply have access to the g_user object.

One of the most important things to understand about client-side code is that it can have serious impact on the user experience, in terms of performance. Querying a record from the database, for example, requires constructing a query, sending it across to the server, waiting for the response, and then waiting for all of the data associated with the response to that query (and all of the records contained therein) to be sent back to the client from the server.

Since JavaScript executes...