Manipulating Wix Code through DOM

I am playing with Wix Code, Third-party libraries and DOM.

This is the HTML of a wix page. Please observe the <div id=“comp-kmkhmrzq” class"_1lRal"> that is produced by wix.

My question is, those two attributes with given random values by Wix, are they dynamic (tendency for future change), if the values change, then why and what trigger that?