Concat two nodelists

Question

I am trying to concat two nodelists using

var ul   = document.querySelector(\"ul\");
var down = document.getElementsByClassName(\"mobile\")[0];
var ul_child = Ar         


        

Answer 1

This is a bit of a different approach, but perhaps you could try combining them in your query selector:

var ul_down   = document.querySelectorAll("ul,.mobile:first-child");