This character is a Format and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Boundary Neutral. When changing direction it is not mirrored. U+200B offers a line break opportunity at its position.
The Wikipedia has the following information about this codepoint:
The zero-width space (), abbreviated ZWSP, is a non-printing character used in computerized typesetting to indicate where the word boundaries are, without actually displaying a visible space in the rendered text. This enables text-processing systems for scripts that do not use explicit spacing to recognize where word boundaries are for the purpose of handling line breaks appropriately. Zero-width space is unicode character U+200B, and is located in the unicode General Punctuation block, and can be represented by numeric character references ​ or ​.
Representations
System
Representation (click value to copy)
Nº
8203
UTF-8
E2 80 8B
UTF-16
20 0B
UTF-32
00 00 20 0B
URL-Quoted
%E2%80%8B
HTML hex reference
​
Wrong windows-1252 Mojibake
​
HTML named entity
​
HTML named entity
​
HTML named entity
​
HTML named entity
​
HTML named entity
​
abbreviation
ZWSP
Encoding: GB18030 (hex bytes)
81 36 A4 37
Encoding: CP420 (hex bytes)
45
Adobe Glyph List
zerowidthspace
RFC 5137
\u'200B'
Bash and Zsh inside echo -e
\u200B
C and C++
\u200B
C#
\u200B
CSS
\00200B
Excel
=UNICHAR(8203)
Go
\u200B
JavaScript
\u200B
Modern JavaScript since ES6
\u{200b}
JSON
\u200B
Java
\u200B
Lua
\u{200B}
Matlab
char(8203)
Perl
"\x{200B}"
PHP
\u{200b}
PostgreSQL
U&'\200B'
PowerShell
`u{200B}
Python
\u200B
Ruby
\u{200b}
Rust
\u{200b}
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