RegEx help

[neptune6jun44]

RegEx noob here, so apologies for such an easy issue.

I have a string like A:BCD:EFG and I need to populate a variable with
'BCD'.

What is the RegEx syntax for matching the content between the two
colons?

Thanks.

 

[Dr J R Stockton]

In comp.lang.javascript message <53a45a23-d00d-4c7e-a798-f1befa15358e@l3
2g2000hse.googlegroups.com>, Wed, 12 Dec 2007 10:32:14,

I have a string like A:BCD:EFG and I need to populate a variable with
'BCD'.

What is the RegEx syntax for matching the content between the two
colons?

S = "A:BCD:EFG"

S.replace(/.*.*):.*/, "$1")
or
M = S.match(/.*):/)[1]

The match method is more extensible.

See
<http://www.ifi.uzh.ch/groups/CL/siclemat/lehre/javascript/JS13/contents
..htm> Client-Side JavaScript Reference - 1998; legible ;
& <URL:http://www.merlyn.demon.co.uk/js-valid.htm>.

It's a good idea to read the newsgroup c.l.j and its FAQ. See below.

 

[Thomas 'PointedEars' Lahn]

RegEx noob here, so apologies for such an easy issue.

I have a string like A:BCD:EFG and I need to populate a variable with
'BCD'.

What is the RegEx syntax for matching the content between the two
colons?

Assuming "BCD" is variant, for example

:[^:]+:

(a colon followed by a positive number of non-colons followed by a colon.)

How to write Regular Expressions in general is off-topic here as those can
be employed in many programming languages. Try comp.lang.misc next time or
STFW (and find "Mastering Regular Expressions" by Jeffrey E. F. Friedl at
O'Reilly Online).


PointedEars

 

[RobG]

RegEx noob here, so apologies for such an easy issue.

I have a string like A:BCD:EFG and I need to populate a variable with
'BCD'.

What is the RegEx syntax for matching the content between the two
colons?

You can also split the elements into an array using split:

var s = 'A:BCD:EFG';
var sArray = s.split(':');

==> sArray = ['A', 'BCD', 'EFG'];

 

[Steve Swift]

I have a string like A:BCD:EFG and I need to populate a variable with

'BCD'.

this works for me:

.*):

but I have little or no concept of putting things in variables. I use
"The Regex Coach" to ensure that things work as I would expect them to.

 

[Thomas 'PointedEars' Lahn]

Thomas 'PointedEars' Lahn said the following on 12/12/2007 6:18 PM:

Writing Regular Expressions for Javascript/JScript is *very* on-topic in
this group. And to say otherwise is ignorant

 

[Thomas 'PointedEars' Lahn]

this works for me:

.*):

This will match also `::'.

but I have little or no concept of putting things in variables. I use
"The Regex Coach" to ensure that things work as I would expect them to.

Is that a book?


PointedEars

 

[Steve Swift]

This will match also `::'.

If that's the data then "" is the answer.

Is that a book?

No: http://weitz.de/regex-coach/ - but there are many of these. I found
this one usable and informative. I know just enough regex to get it
wrong nearly every time until I've tested/fixed my first guess with
Regex Coach.

 

[Thomas 'PointedEars' Lahn]

If that's the data then "" is the answer.

Not destroying the context might have been wise in order to understand what
I was aiming at.


PointedEars

 

[Steve Swift]

Not destroying the context might have been wise in order to understand what
I was aiming at.


PointedEars

You're in the wrong newsgroup. You should aim such comments at the
cause: Thunderbird.

 

[Thomas 'PointedEars' Lahn]

Thomas 'PointedEars' Lahn wrote:
I have a string like A:BCD:EFG and I need to populate a variable with ^^^
'BCD'.

this works for me:

.*):
This will match also `::'.
If that's the data then "" is the answer.

Not destroying the context might have been wise in order to understand what
I was aiming at.
[...]

You're in the wrong newsgroup. You should aim such comments at the
cause: Thunderbird.

I use exactly the same version of Thunderbird like you do and therefore I
know that is an outright lie^W winding around *your* failing. You should
be ashamed for attributing it to the software.

Please trim your quotes while retaining the context.


F'up2 poster

PointedEars