\u200b (Zero width space) characters in my JS code. Where did they come from?

Question

I am developing a front end of a web app using NetBeans IDE 7.0.1. Recently I had a very nasty bug, which I finally fixed.

Say I have code

var elemen         


        

Answer 1

I have similar issue with '\u200b' zero-width space character in my current project. I need to work on JSON object returned from server. Email object with '[at]' need to be replaced with '@' character. Surprisingly, several of the objects had the email address littered with 'space' in and around the '@'.

Long story short, I checked using Postman and scrutinised the returned JSON as RAW. Here is the raw example:

johndoe[at]\u200bxyz.org

I could see the character '\u200b' on all those trouble email address. Since only few email addresses affected, I removed the character manually. The server gets the data from Sharepoint.