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Learning ServiceNow

You're reading from   Learning ServiceNow Administration and development on the Now platform, for powerful IT automation

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Product type Paperback
Published in Jun 2018
Publisher
ISBN-13 9781788837040
Length 388 pages
Edition 2nd Edition
Languages
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Author (1):
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Tim Woodruff Tim Woodruff
Author Profile Icon Tim Woodruff
Tim Woodruff
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Toc

Table of Contents (17) Chapters Close

Preface 1. The Interface FREE CHAPTER 2. Lists and Forms 3. UI Customization 4. Understanding Data and Relationships 5. Tasks and Workflows 6. UI and Data Policies 7. User Administration and Security 8. Introduction to Scripting 9. The Server-Side Glide API 10. The Client-Side Glide API 11. Server-Side Scripting 12. Client-Side Scripting 13. Service Portal Scripting 14. Debugging 15. Pro Tips Index

GlideSystem


The GlideSystem server-side API is not constructed using the new keyword, but is available to all server-side scripts via the variable gs. This API allows us to get various kinds of useful information about the system, the user's session, the current date/time, or other bits of useful info. It also allows you to interact with the user, by displaying informational or error messages.

addErrorMessage() and addInfoMessage()

The addErrorMessage() method will display a red error message at the top of the user's browser window on the next page they load after the server-side script that calls this method runs. This same functionality can also be achieved from a client-script, using the g_form API (g_form.addErrorMessage()).

addInfoMessage() has the same effect, but instead displays a blue informational message as opposed to a red error message.

Example usage

The following script could run inside of a business rule or other server-side script, and show a message indicating whether the operation...

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