Im working elequent javascript element by tag name- chap 14. I am a little confused what is going on by a few lines and not sure what is going on. if you could clearly explain the check function, which im getting confused with- I really really would appreciate it. thank you

i would appreciate if you could comment on each line so i could see what is going on. im not sure if my comments is right

Heading with a span element.

A paragraph with one, two

spans.