Is it <br> or <br />?

Question

According to SoloLearn it is <br /> but according to other sources its is <br>!! So what reality should I come up with??

Answer 1

Just remember both of them works
https://code.sololearn.com/WndUvsoRRFe9/?ref=app

Answer 2

In old XML,

a tag must be closed.

so opening tag must be paired with ending tag,
or it has no child, it can be self closing (with a /)

e. g.
<link />
<img />

Nowadays, HTML no longer needs follow XML, so single opening tag <br> is ok too now.

Answer 3

Gordon is correct, but another thing to note is that using <br /> is a good habit to get into, because sometimes you have to use it. Like in jsx