What does | means in Vue.js ?

Question

I got this question in an interview:

If we have "{{ a | b }}" in a vue instance template, what is b?

I never saw the | symbol used in js before, what is it called ? why do we use it? Also, I would really love to know the answer here!

Answer 1

`|` symbol is known as Bitwise OR operator in the most of the programming languages.

https://www.sololearn.com/learn/4073/?ref=app