Strange behavior: iframe must be written twice to appear... In console only one single corresponding iframe is detected. Why?

Question

Details in attached file JS
https://code.sololearn.com/W62phcz56h3B/?ref=app

Answer 1

The previous <iframe> (src="IndiceUSD_BRL.html") is not correctly closed (</frame> instead of </iframe>), so any following html code until the next </iframe> is ignored (as content of <iframe></iframe>) ;)

Answer 2

I believe in you... but I can't see that yet!!! Was the first thing that I looked for...lolol... Thank you for yours hawk's eye.

Answer 3

I've found it. Dyslexia detected!