Working with Advanced VDL

Covered Topics

• Using Dynamic Attributes
  Using dynamic attributes, you can set VDL and HTML attributes on elements using the result of VDL expressions.
• Working with Image Attachments
  Views can use images that originate as scenario attachments.
• Hiding Content with No-results Overlays
  When one or more scenarios have no results data, you can hide the content in portions of your views.
• Creating Custom VDL Extensions
  VDL 4.1 embodies the idea that the VDL language should be extensible, and that adding to it should be as natural as adding a new VDL view to a typical app.
• Spotting Mistakes with VDL Hints
  When you are developing VDL views, Xpress Insight can provide feedback by flagging some classes of mistake or sub-optimal cases.
• Preloading Entities
  At load time, VDL views are scanned for scenario and entity references - such references are collated and network requests for data batched together in a preload step.