Dynamics 365 Customer Engagement (on-premises) provide you a rich set of client APIs to interact with form objects and events to control what and when to display on a form.
Some client APIs are deprecated in the current release of Dynamics 365 Customer Engagement (on-premises). Ensure that you are aware of these APIs as you write your client-side code for Customer Engagement. More information: Deprecated client APIs
Understand the Client API object model
Walkthrough: Write your first client script
Web resources for Customer Engagement
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