I have a requirement to send a dialog value(i.e. dropdown) to java script and get back the response from ajax , update the value in dialog.. how to achieve it..
send country value -- IN -- > get the address from file and update the same into same dialog box again.(i.e textbox)
When you need to use Classic UI and read dialog values, you need to write a custom xtype. That is where yiu can add JS logic using values obtained from a classic UI component dialog.
This older community artilce may help you learn how to work with dialog values with code.
Adobe Experience Manager Help | Dynamically updating Adobe Experience Manager custom xtype fields
There are events you can trigger for the dialogbox in classic ui. See this Example: [Adobe Experience Manager Help | Validating Adobe Experience Manager Classic UI dialog values ]
Hope this helps