package Mojo::DOM;
use Mojo::Base -strict;
use overload
'@{}' => sub { shift->child_nodes },
'%{}' => sub { shift->attr },
bool => sub {1},
'""' => sub { shift->to_string },
fallback => 1;
# "Fry: This snow is beautiful. I'm glad global warming never happened.
# Leela: Actually, it did. But thank God nuclear winter canceled it out."
use Carp 'croak';
use Mojo::Collection;
use Mojo::DOM::CSS;
use Mojo::DOM::HTML;
use Mojo::Util 'squish';
use Scalar::Util qw(blessed weaken);
sub all_text { shift->_all_text(1, @_) }
sub ancestors { _select($_[0]->_collect($_[0]->_ancestors), $_[1]) }
sub append { shift->_add(1, @_) }
sub append_content { shift->_content(1, 0, @_) }
sub at {
my $self = shift;
return undef unless my $result = $self->_css->select_one(@_);
return $self->_build($result, $self->xml);
}
sub attr {
my $self = shift;
# Hash
my $tree = $self->tree;
my $attrs = $tree->[0] ne 'tag' ? {} : $tree->[2];
return $attrs unless @_;
# Get
return $attrs->{$_[0]} unless @_ > 1 || ref $_[0];
# Set
my $values = ref $_[0] ? $_[0] : {@_};
@$attrs{keys %$values} = values %$values;
return $self;
}
sub child_nodes { $_[0]->_collect(_nodes($_[0]->tree)) }
sub children { _select($_[0]->_collect(_nodes($_[0]->tree, 1)), $_[1]) }
sub content {
my $self = shift;
my $type = $self->type;
if ($type eq 'root' || $type eq 'tag') {
return $self->_content(0, 1, @_) if @_;
my $html = Mojo::DOM::HTML->new(xml => $self->xml);
return join '', map { $html->tree($_)->render } _nodes($self->tree);
}
return $self->tree->[1] unless @_;
$self->tree->[1] = shift;
return $self;
}
sub descendant_nodes { $_[0]->_collect(_all(_nodes($_[0]->tree))) }
sub find { $_[0]->_collect(@{$_[0]->_css->select($_[1])}) }
sub following { _select($_[0]->_collect(@{$_[0]->_siblings(1)->[1]}), $_[1]) }
sub following_nodes { $_[0]->_collect(@{$_[0]->_siblings->[1]}) }
sub matches { shift->_css->matches(@_) }
sub namespace {
my $self = shift;
return undef if (my $tree = $self->tree)->[0] ne 'tag';
# Extract namespace prefix and search parents
my $ns = $tree->[1] =~ /^(.*?):/ ? "xmlns:$1" : undef;
for my $node ($tree, $self->_ancestors) {
# Namespace for prefix
my $attrs = $node->[2];
if ($ns) { $_ eq $ns and return $attrs->{$_} for keys %$attrs }
# Namespace attribute
elsif (defined $attrs->{xmlns}) { return $attrs->{xmlns} }
}
return undef;
}
sub new {
my $class = shift;
my $self = bless \Mojo::DOM::HTML->new, ref $class || $class;
return @_ ? $self->parse(@_) : $self;
}
sub next { $_[0]->_maybe($_[0]->_siblings(1, 0)->[1]) }
sub next_node { $_[0]->_maybe($_[0]->_siblings(0, 0)->[1]) }
sub parent {
my $self = shift;
return undef if $self->tree->[0] eq 'root';
return $self->_build($self->_parent, $self->xml);
}
sub parse { shift->_delegate(parse => @_) }
sub preceding { _select($_[0]->_collect(@{$_[0]->_siblings(1)->[0]}), $_[1]) }
sub preceding_nodes { $_[0]->_collect(@{$_[0]->_siblings->[0]}) }
sub prepend { shift->_add(0, @_) }
sub prepend_content { shift->_content(0, 0, @_) }
sub previous { $_[0]->_maybe($_[0]->_siblings(1, -1)->[0]) }
sub previous_node { $_[0]->_maybe($_[0]->_siblings(0, -1)->[0]) }
sub remove { shift->replace('') }
sub replace {
my ($self, $new) = @_;
return $self->parse($new) if (my $tree = $self->tree)->[0] eq 'root';
return $self->_replace($self->_parent, $tree, $self->_parse($new));
}
sub root {
my $self = shift;
return $self unless my $tree = $self->_ancestors(1);
return $self->_build($tree, $self->xml);
}
sub strip {
my $self = shift;
return $self if (my $tree = $self->tree)->[0] ne 'tag';
return $self->_replace($tree->[3], $tree, ['root', _nodes($tree)]);
}
sub tag {
my ($self, $tag) = @_;
return undef if (my $tree = $self->tree)->[0] ne 'tag';
return $tree->[1] unless $tag;
$tree->[1] = $tag;
return $self;
}
sub tap { shift->Mojo::Base::tap(@_) }
sub text { shift->_all_text(0, @_) }
sub to_string { shift->_delegate('render') }
sub tree { shift->_delegate(tree => @_) }
sub type { shift->tree->[0] }
sub val {
my $self = shift;
# "option"
return $self->{value} // $self->text if (my $tag = $self->tag) eq 'option';
# "textarea", "input" or "button"
return $tag eq 'textarea' ? $self->text : $self->{value} if $tag ne 'select';
# "select"
my $v = $self->find('option:checked')->map('val');
return exists $self->{multiple} ? $v->size ? $v->to_array : undef : $v->last;
}
sub wrap { shift->_wrap(0, @_) }
sub wrap_content { shift->_wrap(1, @_) }
sub xml { shift->_delegate(xml => @_) }
sub _add {
my ($self, $offset, $new) = @_;
return $self if (my $tree = $self->tree)->[0] eq 'root';
my $parent = $self->_parent;
splice @$parent, _offset($parent, $tree) + $offset, 0,
_link($self->_parse($new), $parent);
return $self;
}
sub _all {
map { $_->[0] eq 'tag' ? ($_, _all(_nodes($_))) : ($_) } @_;
}
sub _all_text {
my ($self, $recurse, $trim) = @_;
# Detect "pre" tag
my $tree = $self->tree;
$trim = 1 unless defined $trim;
map { $_->[1] eq 'pre' and $trim = 0 } $self->_ancestors, $tree
if $trim && $tree->[0] ne 'root';
return _text([_nodes($tree)], $recurse, $trim);
}
sub _ancestors {
my ($self, $root) = @_;
return unless my $tree = $self->_parent;
my @ancestors;
do { push @ancestors, $tree }
while ($tree->[0] eq 'tag') && ($tree = $tree->[3]);
return $root ? $ancestors[-1] : @ancestors[0 .. $#ancestors - 1];
}
sub _build { shift->new->tree(shift)->xml(shift) }
sub _collect {
my $self = shift;
my $xml = $self->xml;
return Mojo::Collection->new(map { $self->_build($_, $xml) } @_);
}
sub _content {
my ($self, $start, $offset, $new) = @_;
my $tree = $self->tree;
unless ($tree->[0] eq 'root' || $tree->[0] eq 'tag') {
my $old = $self->content;
return $self->content($start ? "$old$new" : "$new$old");
}
$start = $start ? ($#$tree + 1) : _start($tree);
$offset = $offset ? $#$tree : 0;
splice @$tree, $start, $offset, _link($self->_parse($new), $tree);
return $self;
}
sub _css { Mojo::DOM::CSS->new(tree => shift->tree) }
sub _delegate {
my ($self, $method) = (shift, shift);
return $$self->$method unless @_;
$$self->$method(@_);
return $self;
}
sub _link {
my ($children, $parent) = @_;
# Link parent to children
my @new = @$children[1 .. $#$children];
for my $node (@new) {
my $offset = $node->[0] eq 'tag' ? 3 : 2;
$node->[$offset] = $parent;
weaken $node->[$offset];
}
return @new;
}
sub _maybe { $_[1] ? $_[0]->_build($_[1], $_[0]->xml) : undef }
sub _nodes {
return unless my $tree = shift;
my @nodes = @$tree[_start($tree) .. $#$tree];
return shift() ? grep { $_->[0] eq 'tag' } @nodes : @nodes;
}
sub _offset {
my ($parent, $child) = @_;
my $i = _start($parent);
$_ eq $child ? last : $i++ for @$parent[$i .. $#$parent];
return $i;
}
sub _parent { $_[0]->tree->[$_[0]->type eq 'tag' ? 3 : 2] }
sub _parse { Mojo::DOM::HTML->new(xml => shift->xml)->parse(shift)->tree }
sub _replace {
my ($self, $parent, $tree, $new) = @_;
splice @$parent, _offset($parent, $tree), 1, _link($new, $parent);
return $self->parent;
}
sub _select {
my ($collection, $selector) = @_;
return $collection unless $selector;
return $collection->new(grep { $_->matches($selector) } @$collection);
}
sub _siblings {
my ($self, $tags, $i) = @_;
return [] unless my $parent = $self->parent;
my $tree = $self->tree;
my (@before, @after, $match);
for my $node (_nodes($parent->tree)) {
++$match and next if !$match && $node eq $tree;
next if $tags && $node->[0] ne 'tag';
$match ? push @after, $node : push @before, $node;
}
return defined $i ? [$before[$i], $after[$i]] : [\@before, \@after];
}
sub _start { $_[0][0] eq 'root' ? 1 : 4 }
sub _text {
my ($nodes, $recurse, $trim) = @_;
# Merge successive text nodes
my $i = 0;
while (my $next = $nodes->[$i + 1]) {
++$i and next unless $nodes->[$i][0] eq 'text' && $next->[0] eq 'text';
splice @$nodes, $i, 2, ['text', $nodes->[$i][1] . $next->[1]];
}
my $text = '';
for my $node (@$nodes) {
my $type = $node->[0];
# Text
my $chunk = '';
if ($type eq 'text') { $chunk = $trim ? squish $node->[1] : $node->[1] }
# CDATA or raw text
elsif ($type eq 'cdata' || $type eq 'raw') { $chunk = $node->[1] }
# Nested tag
elsif ($type eq 'tag' && $recurse) {
no warnings 'recursion';
$chunk = _text([_nodes($node)], 1, $node->[1] eq 'pre' ? 0 : $trim);
}
# Add leading whitespace if punctuation allows it
$chunk = " $chunk" if $text =~ /\S\z/ && $chunk =~ /^[^.!?,;:\s]+/;
# Trim whitespace blocks
$text .= $chunk if $chunk =~ /\S+/ || !$trim;
}
return $text;
}
sub _wrap {
my ($self, $content, $new) = @_;
$content = 1 if (my $tree = $self->tree)->[0] eq 'root';
$content = 0 if $tree->[0] ne 'root' && $tree->[0] ne 'tag';
# Find innermost tag
my $current;
my $first = $new = $self->_parse($new);
$current = $first while $first = (_nodes($first, 1))[0];
return $self unless $current;
# Wrap content
if ($content) {
push @$current, _link(['root', _nodes($tree)], $current);
splice @$tree, _start($tree), $#$tree, _link($new, $tree);
return $self;
}
# Wrap element
$self->_replace($self->_parent, $tree, $new);
push @$current, _link(['root', $tree], $current);
return $self;
}
1;
=encoding utf8
=head1 NAME
Mojo::DOM - Minimalistic HTML/XML DOM parser with CSS selectors
=head1 SYNOPSIS
use Mojo::DOM;
# Parse
my $dom = Mojo::DOM->new('<div><p id="a">Test</p><p id="b">123</p></div>');
# Find
say $dom->at('#b')->text;
say $dom->find('p')->map('text')->join("\n");
say $dom->find('[id]')->map(attr => 'id')->join("\n");
# Iterate
$dom->find('p[id]')->reverse->each(sub { say $_->{id} });
# Loop
for my $e ($dom->find('p[id]')->each) {
say $e->{id}, ':', $e->text;
}
# Modify
$dom->find('div p')->last->append('<p id="c">456</p>');
$dom->find(':not(p)')->map('strip');
# Render
say "$dom";
=head1 DESCRIPTION
L<Mojo::DOM> is a minimalistic and relaxed HTML/XML DOM parser with CSS
selector support. It will even try to interpret broken HTML and XML, so you
should not use it for validation.
=head1 NODES AND ELEMENTS
When we parse an HTML/XML fragment, it gets turned into a tree of nodes.
<!DOCTYPE html>
<html>
<head><title>Hello</title></head>
<body>World!</body>
</html>
There are currently eight different kinds of nodes, C<cdata>, C<comment>,
C<doctype>, C<pi>, C<raw>, C<root>, C<tag> and C<text>. Elements are nodes of
the type C<tag>.
root
|- doctype (html)
+- tag (html)
|- tag (head)
| +- tag (title)
| +- raw (Hello)
+- tag (body)
+- text (World!)
While all node types are represented as L<Mojo::DOM> objects, some methods like
L</"attr"> and L</"namespace"> only apply to elements.
=head1 CASE-SENSITIVITY
L<Mojo::DOM> defaults to HTML semantics, that means all tags and attribute
names are lowercased and selectors need to be lowercase as well.
# HTML semantics
my $dom = Mojo::DOM->new('<P ID="greeting">Hi!</P>');
say $dom->at('p[id]')->text;
If XML processing instructions are found, the parser will automatically switch
into XML mode and everything becomes case-sensitive.
# XML semantics
my $dom = Mojo::DOM->new('<?xml version="1.0"?><P ID="greeting">Hi!</P>');
say $dom->at('P[ID]')->text;
XML detection can also be disabled with the L</"xml"> method.
# Force XML semantics
my $dom = Mojo::DOM->new->xml(1)->parse('<P ID="greeting">Hi!</P>');
say $dom->at('P[ID]')->text;
# Force HTML semantics
my $dom = Mojo::DOM->new->xml(0)->parse('<P ID="greeting">Hi!</P>');
say $dom->at('p[id]')->text;
=head1 METHODS
L<Mojo::DOM> implements the following methods.
=head2 all_text
my $trimmed = $dom->all_text;
my $untrimmed = $dom->all_text(0);
Extract text content from all descendant nodes of this element, smart
whitespace trimming is enabled by default.
# "foo bar baz"
$dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->at('div')->all_text;
# "foo\nbarbaz\n"
$dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->at('div')->all_text(0);
=head2 ancestors
my $collection = $dom->ancestors;
my $collection = $dom->ancestors('div ~ p');
Find all ancestor elements of this node matching the CSS selector and return a
L<Mojo::Collection> object containing these elements as L<Mojo::DOM> objects.
All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# List tag names of ancestor elements
say $dom->ancestors->map('tag')->join("\n");
=head2 append
$dom = $dom->append('<p>I ♥ Mojolicious!</p>');
Append HTML/XML fragment to this node.
# "<div><h1>Test</h1><h2>123</h2></div>"
$dom->parse('<div><h1>Test</h1></div>')
->at('h1')->append('<h2>123</h2>')->root;
# "<p>Test 123</p>"
$dom->parse('<p>Test</p>')->at('p')
->child_nodes->first->append(' 123')->root;
=head2 append_content
$dom = $dom->append_content('<p>I ♥ Mojolicious!</p>');
Append HTML/XML fragment (for C<root> and C<tag> nodes) or raw content to this
node's content.
# "<div><h1>Test123</h1></div>"
$dom->parse('<div><h1>Test</h1></div>')
->at('h1')->append_content('123')->root;
# "<!-- Test 123 --><br>"
$dom->parse('<!-- Test --><br>')
->child_nodes->first->append_content('123 ')->root;
# "<p>Test<i>123</i></p>"
$dom->parse('<p>Test</p>')->at('p')->append_content('<i>123</i>')->root;
=head2 at
my $result = $dom->at('div ~ p');
Find first descendant element of this element matching the CSS selector and
return it as a L<Mojo::DOM> object or return C<undef> if none could be found.
All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# Find first element with "svg" namespace definition
my $namespace = $dom->at('[xmlns\:svg]')->{'xmlns:svg'};
=head2 attr
my $hash = $dom->attr;
my $foo = $dom->attr('foo');
$dom = $dom->attr({foo => 'bar'});
$dom = $dom->attr(foo => 'bar');
This element's attributes.
# List id attributes
say $dom->find('*')->map(attr => 'id')->compact->join("\n");
=head2 child_nodes
my $collection = $dom->child_nodes;
Return a L<Mojo::Collection> object containing all child nodes of this element
as L<Mojo::DOM> objects.
# "<p><b>123</b></p>"
$dom->parse('<p>Test<b>123</b></p>')->at('p')->child_nodes->first->remove;
# "<!DOCTYPE html>"
$dom->parse('<!DOCTYPE html><b>123</b>')->child_nodes->first;
# " Test "
$dom->parse('<b>123</b><!-- Test -->')->child_nodes->last->content;
=head2 children
my $collection = $dom->children;
my $collection = $dom->children('div ~ p');
Find all child elements of this element matching the CSS selector and return a
L<Mojo::Collection> object containing these elements as L<Mojo::DOM> objects.
All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# Show tag name of random child element
say $dom->children->shuffle->first->tag;
=head2 content
my $str = $dom->content;
$dom = $dom->content('<p>I ♥ Mojolicious!</p>');
Return this node's content or replace it with HTML/XML fragment (for C<root>
and C<tag> nodes) or raw content.
# "<b>Test</b>"
$dom->parse('<div><b>Test</b></div>')->at('div')->content;
# "<div><h1>123</h1></div>"
$dom->parse('<div><h1>Test</h1></div>')->at('h1')->content('123')->root;
# "<p><i>123</i></p>"
$dom->parse('<p>Test</p>')->at('p')->content('<i>123</i>')->root;
# "<div><h1></h1></div>"
$dom->parse('<div><h1>Test</h1></div>')->at('h1')->content('')->root;
# " Test "
$dom->parse('<!-- Test --><br>')->child_nodes->first->content;
# "<div><!-- 123 -->456</div>"
$dom->parse('<div><!-- Test -->456</div>')
->at('div')->child_nodes->first->content(' 123 ')->root;
=head2 descendant_nodes
my $collection = $dom->descendant_nodes;
Return a L<Mojo::Collection> object containing all descendant nodes of this
element as L<Mojo::DOM> objects.
# "<p><b>123</b></p>"
$dom->parse('<p><!-- Test --><b>123<!-- 456 --></b></p>')
->descendant_nodes->grep(sub { $_->type eq 'comment' })
->map('remove')->first;
# "<p><b>test</b>test</p>"
$dom->parse('<p><b>123</b>456</p>')
->at('p')->descendant_nodes->grep(sub { $_->type eq 'text' })
->map(content => 'test')->first->root;
=head2 find
my $collection = $dom->find('div ~ p');
Find all descendant elements of this element matching the CSS selector and
return a L<Mojo::Collection> object containing these elements as L<Mojo::DOM>
objects. All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# Find a specific element and extract information
my $id = $dom->find('div')->[23]{id};
# Extract information from multiple elements
my @headers = $dom->find('h1, h2, h3')->map('text')->each;
# Count all the different tags
my $hash = $dom->find('*')->reduce(sub { $a->{$b->tag}++; $a }, {});
# Find elements with a class that contains dots
my @divs = $dom->find('div.foo\.bar')->each;
=head2 following
my $collection = $dom->following;
my $collection = $dom->following('div ~ p');
Find all sibling elements after this node matching the CSS selector and return
a L<Mojo::Collection> object containing these elements as L<Mojo::DOM> objects.
All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# List tags of sibling elements after this node
say $dom->following->map('tag')->join("\n");
=head2 following_nodes
my $collection = $dom->following_nodes;
Return a L<Mojo::Collection> object containing all sibling nodes after this
node as L<Mojo::DOM> objects.
# "C"
$dom->parse('<p>A</p><!-- B -->C')->at('p')->following_nodes->last->content;
=head2 matches
my $bool = $dom->matches('div ~ p');
Check if this element matches the CSS selector. All selectors from
L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# True
$dom->parse('<p class="a">A</p>')->at('p')->matches('.a');
$dom->parse('<p class="a">A</p>')->at('p')->matches('p[class]');
# False
$dom->parse('<p class="a">A</p>')->at('p')->matches('.b');
$dom->parse('<p class="a">A</p>')->at('p')->matches('p[id]');
=head2 namespace
my $namespace = $dom->namespace;
Find this element's namespace or return C<undef> if none could be found.
# Find namespace for an element with namespace prefix
my $namespace = $dom->at('svg > svg\:circle')->namespace;
# Find namespace for an element that may or may not have a namespace prefix
my $namespace = $dom->at('svg > circle')->namespace;
=head2 new
my $dom = Mojo::DOM->new;
my $dom = Mojo::DOM->new('<foo bar="baz">I ♥ Mojolicious!</foo>');
Construct a new scalar-based L<Mojo::DOM> object and L</"parse"> HTML/XML
fragment if necessary.
=head2 next
my $sibling = $dom->next;
Return L<Mojo::DOM> object for next sibling element or C<undef> if there are no
more siblings.
# "<h2>123</h2>"
$dom->parse('<div><h1>Test</h1><h2>123</h2></div>')->at('h1')->next;
=head2 next_node
my $sibling = $dom->next_node;
Return L<Mojo::DOM> object for next sibling node or C<undef> if there are no
more siblings.
# "456"
$dom->parse('<p><b>123</b><!-- Test -->456</p>')
->at('b')->next_node->next_node;
# " Test "
$dom->parse('<p><b>123</b><!-- Test -->456</p>')
->at('b')->next_node->content;
=head2 parent
my $parent = $dom->parent;
Return L<Mojo::DOM> object for parent of this node or C<undef> if this node has
no parent.
=head2 parse
$dom = $dom->parse('<foo bar="baz">I ♥ Mojolicious!</foo>');
Parse HTML/XML fragment with L<Mojo::DOM::HTML>.
# Parse XML
my $dom = Mojo::DOM->new->xml(1)->parse($xml);
=head2 preceding
my $collection = $dom->preceding;
my $collection = $dom->preceding('div ~ p');
Find all sibling elements before this node matching the CSS selector and return
a L<Mojo::Collection> object containing these elements as L<Mojo::DOM> objects.
All selectors from L<Mojo::DOM::CSS/"SELECTORS"> are supported.
# List tags of sibling elements before this node
say $dom->preceding->map('tag')->join("\n");
=head2 preceding_nodes
my $collection = $dom->preceding_nodes;
Return a L<Mojo::Collection> object containing all sibling nodes before this
node as L<Mojo::DOM> objects.
# "A"
$dom->parse('A<!-- B --><p>C</p>')->at('p')->preceding_nodes->first->content;
=head2 prepend
$dom = $dom->prepend('<p>I ♥ Mojolicious!</p>');
Prepend HTML/XML fragment to this node.
# "<div><h1>Test</h1><h2>123</h2></div>"
$dom->parse('<div><h2>123</h2></div>')
->at('h2')->prepend('<h1>Test</h1>')->root;
# "<p>Test 123</p>"
$dom->parse('<p>123</p>')
->at('p')->child_nodes->first->prepend('Test ')->root;
=head2 prepend_content
$dom = $dom->prepend_content('<p>I ♥ Mojolicious!</p>');
Prepend HTML/XML fragment (for C<root> and C<tag> nodes) or raw content to this
node's content.
# "<div><h2>Test123</h2></div>"
$dom->parse('<div><h2>123</h2></div>')
->at('h2')->prepend_content('Test')->root;
# "<!-- Test 123 --><br>"
$dom->parse('<!-- 123 --><br>')
->child_nodes->first->prepend_content(' Test')->root;
# "<p><i>123</i>Test</p>"
$dom->parse('<p>Test</p>')->at('p')->prepend_content('<i>123</i>')->root;
=head2 previous
my $sibling = $dom->previous;
Return L<Mojo::DOM> object for previous sibling element or C<undef> if there
are no more siblings.
# "<h1>Test</h1>"
$dom->parse('<div><h1>Test</h1><h2>123</h2></div>')->at('h2')->previous;
=head2 previous_node
my $sibling = $dom->previous_node;
Return L<Mojo::DOM> object for previous sibling node or C<undef> if there are
no more siblings.
# "123"
$dom->parse('<p>123<!-- Test --><b>456</b></p>')
->at('b')->previous_node->previous_node;
# " Test "
$dom->parse('<p>123<!-- Test --><b>456</b></p>')
->at('b')->previous_node->content;
=head2 remove
my $parent = $dom->remove;
Remove this node and return L</"root"> (for C<root> nodes) or L</"parent">.
# "<div></div>"
$dom->parse('<div><h1>Test</h1></div>')->at('h1')->remove;
# "<p><b>456</b></p>"
$dom->parse('<p>123<b>456</b></p>')
->at('p')->child_nodes->first->remove->root;
=head2 replace
my $parent = $dom->replace('<div>I ♥ Mojolicious!</div>');
Replace this node with HTML/XML fragment and return L</"root"> (for C<root>
nodes) or L</"parent">.
# "<div><h2>123</h2></div>"
$dom->parse('<div><h1>Test</h1></div>')->at('h1')->replace('<h2>123</h2>');
# "<p><b>123</b></p>"
$dom->parse('<p>Test</p>')
->at('p')->child_nodes->[0]->replace('<b>123</b>')->root;
=head2 root
my $root = $dom->root;
Return L<Mojo::DOM> object for C<root> node.
=head2 strip
my $parent = $dom->strip;
Remove this element while preserving its content and return L</"parent">.
# "<div>Test</div>"
$dom->parse('<div><h1>Test</h1></div>')->at('h1')->strip;
=head2 tag
my $tag = $dom->tag;
$dom = $dom->tag('div');
This element's tag name.
# List tag names of child elements
say $dom->children->map('tag')->join("\n");
=head2 tap
$dom = $dom->tap(sub {...});
Alias for L<Mojo::Base/"tap">.
=head2 text
my $trimmed = $dom->text;
my $untrimmed = $dom->text(0);
Extract text content from this element only (not including child elements),
smart whitespace trimming is enabled by default.
# "foo baz"
$dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->at('div')->text;
# "foo\nbaz\n"
$dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->at('div')->text(0);
=head2 to_string
my $str = $dom->to_string;
Render this node and its content to HTML/XML.
# "<b>Test</b>"
$dom->parse('<div><b>Test</b></div>')->at('div b')->to_string;
=head2 tree
my $tree = $dom->tree;
$dom = $dom->tree(['root']);
Document Object Model. Note that this structure should only be used very
carefully since it is very dynamic.
=head2 type
my $type = $dom->type;
This node's type, usually C<cdata>, C<comment>, C<doctype>, C<pi>, C<raw>,
C<root>, C<tag> or C<text>.
# "cdata"
$dom->parse('<![CDATA[Test]]>')->child_nodes->first->type;
# "comment"
$dom->parse('<!-- Test -->')->child_nodes->first->type;
# "doctype"
$dom->parse('<!DOCTYPE html>')->child_nodes->first->type;
# "pi"
$dom->parse('<?xml version="1.0"?>')->child_nodes->first->type;
# "raw"
$dom->parse('<title>Test</title>')->at('title')->child_nodes->first->type;
# "root"
$dom->parse('<p>Test</p>')->type;
# "tag"
$dom->parse('<p>Test</p>')->at('p')->type;
# "text"
$dom->parse('<p>Test</p>')->at('p')->child_nodes->first->type;
=head2 val
my $value = $dom->val;
Extract value from form element (such as C<button>, C<input>, C<option>,
C<select> and C<textarea>) or return C<undef> if this element has no value. In
the case of C<select> with C<multiple> attribute, find C<option> elements with
C<selected> attribute and return an array reference with all values or C<undef>
if none could be found.
# "a"
$dom->parse('<input name="test" value="a">')->at('input')->val;
# "b"
$dom->parse('<textarea>b</textarea>')->at('textarea')->val;
# "c"
$dom->parse('<option value="c">Test</option>')->at('option')->val;
# "d"
$dom->parse('<select><option selected>d</option></select>')
->at('select')->val;
# "e"
$dom->parse('<select multiple><option selected>e</option></select>')
->at('select')->val->[0];
=head2 wrap
$dom = $dom->wrap('<div></div>');
Wrap HTML/XML fragment around this node, placing it as the last child of the
first innermost element.
# "<p>123<b>Test</b></p>"
$dom->parse('<b>Test</b>')->at('b')->wrap('<p>123</p>')->root;
# "<div><p><b>Test</b></p>123</div>"
$dom->parse('<b>Test</b>')->at('b')->wrap('<div><p></p>123</div>')->root;
# "<p><b>Test</b></p><p>123</p>"
$dom->parse('<b>Test</b>')->at('b')->wrap('<p></p><p>123</p>')->root;
# "<p><b>Test</b></p>"
$dom->parse('<p>Test</p>')->at('p')->child_nodes->first->wrap('<b>')->root;
=head2 wrap_content
$dom = $dom->wrap_content('<div></div>');
Wrap HTML/XML fragment around this node's content, placing it as the last
children of the first innermost element.
# "<p><b>123Test</b></p>"
$dom->parse('<p>Test<p>')->at('p')->wrap_content('<b>123</b>')->root;
# "<p><b>Test</b></p><p>123</p>"
$dom->parse('<b>Test</b>')->wrap_content('<p></p><p>123</p>');
=head2 xml
my $bool = $dom->xml;
$dom = $dom->xml($bool);
Disable HTML semantics in parser and activate case-sensitivity, defaults to
auto detection based on processing instructions.
=head1 OPERATORS
L<Mojo::DOM> overloads the following operators.
=head2 array
my @nodes = @$dom;
Alias for L</"child_nodes">.
# "<!-- Test -->"
$dom->parse('<!-- Test --><b>123</b>')->[0];
=head2 bool
my $bool = !!$dom;
Always true.
=head2 hash
my %attrs = %$dom;
Alias for L</"attr">.
# "test"
$dom->parse('<div id="test">Test</div>')->at('div')->{id};
=head2 stringify
my $str = "$dom";
Alias for L</"to_string">.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicio.us>.
=cut