After requesting a website, you can use the trigger condition Ajax On Completed to set text to Ajax.LastData, which contains the results of your AJAX request.
But keep in mind it may not work cross-domain:
[quote:13vemz2h]By default, browsers block AJAX requests across domains. This means, for example, a game on scirra.com can request other pages on scirra.com, but cannot request pages on facebook.com. This is an important security feature of web browsers (it is not specific to Construct 2 or its AJAX object).
If you're posting on your own site where your project is located, no problem.