I am programming a survey on Qualtrics and need to program an end survey button for IRB purposes. I was able to create the End survey buttons using this code:

  

Where I have /FL_38 I can enter a url and the button will transfer to that URL. However, I would like the button to transfer a person to another page in the survey that confirms whether they want to end the survey. The button is on the bottom of every page and we just don't want a person to accidentally hit it and automatically be taken out of the survey. Either the button can elicit a pop up that says, are you sure you want to end the survey, or take participants to another page right before the end of the survey.
I have been following the below instructions but it appears I may not be able to do what I want. https://www.qualtrics.com/community/discussion/3373/javascript-or-other-options-for-inserting-an-exit-survey-button

Any insight is greatly appreciated.