Is it possible for the form to automatically submit and pass parameters to a Thank you page URL?

I have a link on my website, it goes to my form URL with the parameters  ...?userid=xxx&attending=yes  . I want to grab the parameters, store them in the Submission and jump to the Thank You page. I don't want/need the visitor to click a Submit button. Can't figure out how. 

Part 2: I also want to pass those two parameters in the Thank You page URL.

Thanks!

The only solution I could think of of sending a form without pressing the submit button is by using the Global Countdown widget. Once a timer reaches to zero, it will automatically submit the form. You can check out this widget here: https://widgets.jotform.com/widget/global_countdown

With regard to the passing of parameters to your Thank you page URL, you can enable the POST data submission and then you should be able to capture POST data submission from your Thank you URL. Here are some guides for your reference:

https://www.jotform.com/help/51-How-to-Post-Submission-Data-to-Thank-You-Page

https://www.jotform.com/help/126-How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP

Thanks.