among the new features listed in Whats New in SAP Web IDE, July 2016
relies on the definition of a jsDoc @type line which list the control of interest
the variable ‘oProductList’ in the code below did not have code completion support prior to this feature update.
now with the @type comment line added above, you will have code completion support as you type (or CTRL+Space)
it’s nice to have (though i wonder if it could be more seamlessly integrated in the future).
it’s really useful especially when paired with the ‘API Reference’ pane on the right