What is format translation?

Question

JavaScript

What is a format translation? Which is also \u000c

Answer 1

There is Unicode, and there is a format for its recording. The format you provided is escaped UTF-8, where \u indicates that it is a unicode character, and 000C is the character number in hex.
https://mathiasbynens.be/notes/javascript-escapes

Answer 2

The code for this character clearly indicates that it is used as a sign of the start of a new page .
You have encountered UTF-16. On the web, encoding in UTF-16 is being abandoned and it is recommended to use encodeURIComponent() instead of escape() (works with UTF-8).
console.log(unescape('%u000c'));