jQuery is a useful JavaScript library that simplifies methods of interacting with the DOM and is included in the Default Presentation Template.
In jQuery, you:
$("#myElement").addClass("myClass");
Create a form and add a Panel Control. Give the panel a red border using the Styling Assistant.
Ensure that the form has jQuery attached. The bootstrap4 Presentation Template includes jQuery.
Open the HTML Properties window and give the panel the following id: myPanel
Create a jQuery click event with the following script attached:
$("#myPanel").css("border", "1px solid blue");
Run the form and click on the panel. You will notice that the border will change.