BS4 Control Styling at Runtime

Are there some examples/tutorials of using Javascript to change properties of BS4 controls at runtime? I’m doing some simple things with the Input and simply want to change the background of the input box and the text color at runtime. I have questions about other controls too.

Javascript doesn’t seem to use the same syntax with BS4…

I would appreciate any advice/insight you have.
Thank you

Google bootstrap 4 cheat sheets and there are several lists out there. It’s best to change colors, etc, using the bootstrap predefined classes - it’s also rather easy, as all you do is enter the class names you like into the classes property of AppStudio. Doing so at a container level “distributes” that class to all contained objects.

Thank you, I appreciate the information!