Regular expression help

[Mobius]

Hi guys,

I was wondering if any of you know how I can use regular expression to extract the style attribute out of an html tag

for example:

<p style="blah" class="blah">

I want the result to be style="blah" i tried different ones and ended up with including the last occurence of double quote, so it gave me class="blah" as well.

any help would be great!

Thank you
Mobius

 

[kmote]

Oh how I hate regex. This should do the trick though
style="[\w ]+"

 

[Mobius]

oh man you rock care to explain why it works if you don't mind?

i did some test with RAD software regular expression designer and so far so good!

 

[kmote]

Sure, the \w represents a character that is one of A-Za-z0-9_ the [] creates a character class out of that and space then the + makes it repeat one or more times. In short this makes it look for something that looks like this
style="one or more of the following characters: A-Z a-z 0-9 _"
This is a good site for it Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns

 

[Mobius]

ahh i had this before style=".*" but got more than its suppose to, where as yours just knows to stop at the first closing double quote tag

 

[kmote]

You could use the * to match style="" if you like. Having thought about it you don't really get spaces in attributes but in the style attribute you do get : and ; which my fist expression will not catch.
Try style="[^"]*" (if you want style="" to be caught) or style="[^"]+" (if you don't) instead. These ones will catch spaces but they will also catch more than just alphanumeric words as well.

 

[komandin]

Regex

style="[^"]+"