What are three valid ways to exchange data through a Pega Web Mashup?

Use an action object configured as a script to perform additional actions on a web mashup gadget.

Use the Javascript function doAction() to set or read data values through the hosting web page.

Use an SQL call to exchange data between the mashup and hosting web page.

Use a queue processor to pass updated attributes to the gadget on the hosting web page.

Use the data-pega-event-onpagedata attribute to configure the default value for the gadget.