I'm looking to capture just the number after vspace. How would you do that in regex? Here is a sample string.
<img align="left" alt="dude its me" border="10" height="168" hspace="30" vspace="10" width="130" />
So the end result would be 10
views:
45answers:
4Hmm. that last piece with the $1. Not sure I understand that.
Trip
2010-07-27 19:27:38
$1 content what is between parenthesis i.e. 10 with your example. I don't know RoR regex but i presume there is something similar.
M42
2010-07-27 19:37:39
Why the downvote ?
M42
2010-07-27 19:43:14
+1
A:
>> s = '<img align="left" alt="dude its me" border="10" height="168" hspace="30" vspace="10" width="130" />'
>> /vspace="(\d+)"/.match(s)[1]
=> "10"
or, if you're not sure if it exists or not:
if /vspace="(\d+)"/ =~ s
puts $1
else
puts "no match"
end
Peter
2010-07-27 19:28:50
It's probably more readable to use s.match(/.../) which follows the Ruby convention than /.../ =~ s which is inherited from Perl and looks a lot more like line-noise to those not familiar with what it means.
tadman
2010-07-27 20:36:34
+1
A:
To capture just the 10 try this one: (?=\bvspace=")?(\d+)
/vspace="(\d+)" should match the entirety of vspace="10"
AllenG
2010-07-27 19:37:50
+1
A:
Keeping in mind that the vspace could be specified with single quotes, double quotes or no quotes.
n = Nokogiri::HTML(%Q{<img align="left" alt="dude its me" border="10" height="168" hspace="30" vspace="10" width="130" />})
n.css("img").first["vspace"]
Ryan Bigg
2010-07-27 23:44:25