I am trying to do the web interface exercise on my laptop too, for that i download the bootstrap.min.js, vue.min.js and roslib.min.js files. I want to know should i place these files in some specific folder like /opt/ros/kinetic/share…or these can be placed anywhere in system.
In theory you can place them wherever you like but the references to the JS files in the html file must be correct.
I advise you place them in your workspace so that you can easily reference them. Create a folder structure similar to what we have in the course and place the JS files as they were placed in the course.