RegEx in JavaScript: Content Between Two Tags

Question

I need to extract the content between two XML tags, excluding the tags.

PS: I won't be using this just to parse XML. I'll be using the RegEx in JavaScript, so the lookbehind won't work.

What am I doing wrong?

XML:

<location maps="">
    RewriteMap map txt:map.txt
    RewriteMap lower int:tolower
    RewriteCond %{REQUEST_URI} ^/([^/.]+)\.html$ [NC]
    RewriteCond ${map:${lower:%1}|NOT_FOUND} !NOT_FOUND
    RewriteRule .? /index.php?q=${map:${lower:%1}} [NC,L]
</location>

RegEx:

/(?:(?=(\<(?!\/)(.*?)\>)))([\s\S]*?)(?=(\<(?=\/)(.*?)\>))/igm

Results:

<location maps="">
    RewriteMap map txt:map.txt
    RewriteMap lower int:tolower
    RewriteCond %{REQUEST_URI} ^/([^/.]+)\.html$ [NC]
    RewriteCond ${map:${lower:%1}|NOT_FOUND} !NOT_FOUND
    RewriteRule .? /index.php?q=${map:${lower:%1}} [NC,L]

What I Want

RewriteMap map txt:map.txt
RewriteMap lower int:tolower
RewriteCond %{REQUEST_URI} ^/([^/.]+)\.html$ [NC]
RewriteCond ${map:${lower:%1}|NOT_FOUND} !NOT_FOUND
RewriteRule .? /index.php?q=${map:${lower:%1}} [NC,L]

There must be a super easy and robust way if you can use any decent XML parser, instead of doing this with regex; Why is it such a bad idea to parse XML with regex? — har07
– har07, Commented May 12, 2016 at 9:59
Actually it's just an example, I'll be using it for anything, HTML, XML, even if I have to get content between two 'Things' with multiple lines. — HovyTech
– HovyTech, Commented May 12, 2016 at 10:05

Mayur Koshti · Accepted Answer · 2016-05-12 12:13:47Z

1

You can also use the following regex: (if tag name is constant)

<location[^>]*>([^<]+)</location>

answered May 12, 2016 at 12:13

Mayur Koshti

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2 Comments

HovyTech Over a year ago

That still has a result with the tags in.

Mayur Koshti Over a year ago

I have made regex based on your given example. It is working correctly.

SamWhan · Accepted Answer · 2016-05-12 10:13:45Z

0

How about

<(\w+)[^>]+>\n*([\s\S]*)<\/\1>

It'll grab your tag, capture everything up to tag repeated prefixed with /.

Result in capture group 2.

Check it out here at regex101.

answered May 12, 2016 at 10:13

SamWhan

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4 Comments

HovyTech Over a year ago

That's not quite what I am looking for. I already have a fixed JavaScript RegEx Template and the only thing that changes is the RegEx.

SamWhan Over a year ago

Don't quite follow... Do you mean you have to use the match, not capture groups?

HovyTech Over a year ago

The template will loop through the RegEx that was put into it. The template will find the RegEx and replace it with something. I wouldn't want to change the template just for one RegEx option when I have 123 more RegEx options. I need the RegEx to just capture what is between the two tags, excluding the tags.

SamWhan Over a year ago

Then I don't see a way of doing it since JS don't have look behinds.

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