I've just read this tutorial https://docs.joomla.org/J3.x:Developing_an_MVC_Component and finished my component (Joomla! 3.7). Now I realise that the site view doesn't contain the jquery link(s) in the header - in contrast to each other (sub-)page of my site.
I know I could just add the neccessary lines of code in my template, but I didn't do so because right from the beginning Joomla did that for me - except when I browse to my component's view. Unfortunately I couldn't find any info about this behaviour so I hope someone can shed some light on this ...?!