![What Is Replace(/(]+)>)/Ig," ") Doing?](https://docuprint.cloud68.co/uploads/what-is-replace-ig-doing_1200.jpg)
I have come across come code written by another developer and I can not working out what it is doing:
title.replace(/(<([^>]+)>)/ig," ")
2 Answers
It replaces all tags (substrings on the form <...>) with a space, " ".
Here's a regexp breakdown:
<- a left tag[^>]- anything but a right tag...+- ...one or more times>- a right tag.
The ( and ) just surrounds the groups in the expression, which are not used anyway.
The /ig suffix says that the regex is case insensitive (pointless in this case, since the rexeg doesn't mention any letters) and global stating that all occurrences should be replaced.
Looks like it's replacing HTML start or end tags. If you ever need to parse Regex expressions or test them, here's a great site.
NODE EXPLANATION
----------------------------------------------------------------------
(?i-msx: group, but do not capture (case-insensitive)
(with ^ and $ matching normally) (with . not
matching \n) (matching whitespace and #
normally):
----------------------------------------------------------------------
( group and capture to \1:
----------------------------------------------------------------------
< '<'
----------------------------------------------------------------------
( group and capture to \2:
----------------------------------------------------------------------
[^>]+ any character except: '>' (1 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
) end of \2
----------------------------------------------------------------------
> '>'
----------------------------------------------------------------------
) end of \1
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
