Question

I need to find through regular expression from <div id="class1"> to end of </div>. I may also have as many <div> within its text inside it. Please find the code below

This is example <div id="class1">This is <div id="subclass1">This is </div> <div id="subclass2">This is </div> This is </div> This is example

I have tried the below code. But it gets only up to first </div> of <div id="subclass1">
Could any help me to solve this?

Code I tried to capture is:

<div id="class1">(?:(?!<\/div>).)*?</div>

Answer 1

Use a proper HTML parser.

use strict;
use warnings;
use feature qw( say );

use XML::LibXML qw( );

my $html = 'This is example <div id="class1">This is <div id="subclass1">This is </div> <div id="subclass2">This is </div> This is </div> This is example';

my $parser = XML::LibXML->new();
my $doc    = $parser->parse_html_string($html);
my $root   = $doc->documentElement();

for my $div ($root->findnodes('//div[@id="class1"]')) {
   say "[", $div->toString(), "]";
}