Appears & after &, what is it? why?

Question

JavaScript

I write the link in innerHTML, before writing the link is correct, the page shows everything correctly, when I read in the console iner the link is different with these amp; why is this happening? if that code in chrome extension

Answer 1

The ampersand is a special character in HTML. Check out w3schools for a lot of great stuff. Any normal validator will tell you that a pure ampersand in HTML is not good: if it is followed by something that looks like a character code, your link may suddenly break.
When fetching the link back, you can do something like this:
and get back clean &