Using JavaScript RegEx.
How can I match a <p> element(including attributes), but not <param> or other HTML elements starting with a "P".
views:
128answers:
5
+4
A:
Try:
/(<p(?:\s+[^>]*)?>)/i
/
( #start capture group
<p #match '<p'
(?: #start non-capture group
\s+ #match one or more white space characters
[^>]* #match zero or more characters that arent >
)? #end non-capture group - make it optional
> #match '>'
) #end capture group
/i #end regexp - make case insensitive
gnarf
2009-09-08 09:45:32
The problem is, that this doesn't match a simple `<p>`. -1
Boldewyn
2009-09-08 09:50:18
I noticed that too - and fixed it ;)
gnarf
2009-09-08 09:50:44
Yup, reverted the -1. +1 for comments.
Boldewyn
2009-09-08 09:52:04
Same as Doldewyn, reverted +1 =)
Clement Herreman
2009-09-08 09:52:36
A:
/<(?:p|P)\s+/.exec(s);
Although it doesn't match the entire tag, but that's quite complicated considering that the tag closing symbol > is allowed inside an attribute.
erikkallen
2009-09-08 09:45:34
@Clement: How would you do this. Consider <p title="Greater than (>)">. How would you match the entire tag with a regular expression? (I realize it's possible, that's why I said "quite comlicated", not "impossible").
erikkallen
2009-09-08 22:09:04
A:
<(p|P)([\s].*)?>
seems to work good =). But you shouldn't use RegEx when you can use DOM, or even XML/XPath/whatever.
Clement Herreman
2009-09-08 09:47:15
the `.*` in your regexp will be greedy and continue matching beyond the end of the tag, up until the last available `>`. `[^>]*` or even `.*?` would be better.
gnarf
2009-09-08 10:13:15
+2
A:
/<p\b[^>]*>/i
\b matches a word boundary; coming after the 'p' it means the next character (if there is a next character) is not a letter, digit or underscore.
Disclosure: [^>]* isn't really the correct way to match the rest of the tag, since attribute values can legally contain angle brackets. But it's probably good enough, and that's not what the question is about anyway.
Alan Moore
2009-09-08 10:05:53