Is it possible to auto scroll a website and select items in a list?

Before I spend too much time researching this I though I would ask the question here to make sure that it is even possible what I am trying to do.

Context: I am trying to help a friend who is a truck driver. He uses a dispatch website to select his freights. The website lists everything that is available as a list but it does not let him filter by zip code. Basically he has to manually scroll this big list looking for deliveries. If he finds something on his zip code or around it he selects it.

Question: Is it possible to auto-scroll the website, filter by zip code and select an item, if it matches?

There are no available APIs that would allow me to do this programmatically. So I though maybe there is a way to scroll the website using JavaScript and select base on a particular field (zip code).

Is this even possible? Is there a better way to go about this?

Thank you for any help.