Creating a button with a field link behind it


I am not a developer and need some help with what I think is a simple task.  I have a field that is a concatenation of a base URL. (URL/firstname_lastname) .  Since each of these fields is different because each client has a different name, I cannot just place this field in a regular menu button connected to a URL....cause the URL is dynamic.  

So what I need is some script to place this field (field 1861) behind a plain button with the ability to name the button which is that same for everyone.  

I've tried copying the HTML from another button on the page in Chrome's "Inspect" mode and just put in "field 1861" and it worked fine.  However, that is html and not javascript.


Could you explain a little more about your situation?