looking for some regex help - white space before/after new line

[purbeast0]

i am okay with some basic regex and will just look at a regex cheat sheet (http://www.cheatography.com/davechild/cheat-sheets/regular-expressions/) but I am having problems trying to figure this out.

what i have is a multiline string like the following (note the white space before/after the terms on each line)

   this is one term      
       another term             
 only one space

then take this modified version of the above with no white before/after each term

this is one term
another term
only one space

i'm looking to write a regex that will match the first one because it finds white space before/after each new line (don't worry about the initial/trailing white space in that string, because a .trim() handles that).

i'm having trouble with this so looking for some help. anyone?

 

[Ken g6]

Regular expressions are subtly different for different languages. Especially when it comes to things like newlines. Based on your cheat sheet, I'm thinking something like this:

!/[^ ]\r|\r[^ ]/s

To match any newline with a non-space next to it; then invert the result. One or both of those might need to be \n, not \r. Your OS may affect that as well.

 

[purbeast0]

thanks for the quick help, i will check that out.

this is in javascript and it will always be ran on windows machines.

i also might have found out another way to do this that does not involve regex and can be done splitting on new lines in an angular validator.

EDIT:

yeah just went with the angular validator and did a split on new lines in the string, then just do a trim and compare the length before/after and it works fine. these aren't going to be huge strings or anything so it isn't going to be a performance hit.