You need to use negative lookahead
here:
^(?!((TST|MST|RAD)[|]|some text)).*$
سؤال
I have yet another javascript regex question.
I need to match any line that does not start with three letters and a pipe.
For instance, in
some text that doesn't matter
Test1
RandomLine
C|
FName
Test1, RandomLine, C|, FName must all be matched.
However,
some text that doesn't matter
TST|
MST|
RAD|
must not be matched.
Note: The above mentioned test cases are one string altogether and not 3 different strings
I was trying to come up with the logic and this was what I arrived at:
/\n.{3}\|/g
However, I need a way to be able to negate the .{3}\| in my regex, since I need to find a newline that is not followed by 3 characters and a pipe.
I did go through the site and I read that I may have to use the negative lookaheads to achieve negations but I was unable to achieve any success with that.
Is there any way to be able to accomplish this in JavaScript?
Thanks.
المحلول
You need to use negative lookahead
here:
^(?!((TST|MST|RAD)[|]|some text)).*$