Yup. Like this:
var jon1, jon2, jon3;
jon1 = document.getElementsByClassName("content")[0];
jon2 = jon1.getElementsByTagName("article")[0];
jon3 = jon2.getElementsByTagName("a")[0];
console.log (jon3.innerHTML);
Notice that var is only used when declaring the variable, not when assigning it in this case.
You will see this method used a lot as you go forward 🙂