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Mojolicious-2.69
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/ Mojo::DOM

NAME

Mojo::DOM - Minimalistic HTML5/XML DOM parser with CSS3 selectors

SYNOPSIS

  use Mojo::DOM;

  # Parse
  my $dom = Mojo::DOM->new('<div><p id="a">A</p><p id="b">B</p></div>');

  # Find
  my $b = $dom->at('#b');
  say $b->text;

  # Walk
  say $dom->div->p->[0]->text;
  say $dom->div->children('p')->first->{id};

  # Iterate
  $dom->find('p[id]')->each(sub { say shift->{id} });

  # Loop
  for my $e ($dom->find('p[id]')->each) {
    say $e->text;
  }

  # Modify
  $dom->div->p->[1]->append('<p id="c">C</p>');

  # Render
  say $dom;

DESCRIPTION

Mojo::DOM is a minimalistic and relaxed HTML5/XML DOM parser with CSS3 selector support. It will even try to interpret broken XML, so you should not use it for validation.

CASE SENSITIVITY

Mojo::DOM defaults to HTML5 semantics, that means all tags and attributes are lowercased and selectors need to be lowercase as well.

  my $dom = Mojo::DOM->new('<P ID="greeting">Hi!</P>');
  say $dom->at('p')->text;
  say $dom->p->{id};

If XML processing instructions are found, the parser will automatically switch into XML mode and everything becomes case sensitive.

  my $dom = Mojo::DOM->new('<?xml version="1.0"?><P ID="greeting">Hi!</P>');
  say $dom->at('P')->text;
  say $dom->P->{ID};

XML detection can be also disabled with the xml method.

  # XML sematics
  $dom->xml(1);

  # HTML5 semantics
  $dom->xml(0);

METHODS

Mojo::DOM implements the following methods.

new

  my $dom = Mojo::DOM->new;
  my $dom = Mojo::DOM->new('<foo bar="baz">test</foo>');

Construct a new Mojo::DOM object.

all_text

  my $trimmed   = $dom->all_text;
  my $untrimmed = $dom->all_text(0);

Extract all text content from DOM structure, smart whitespace trimming is enabled by default.

  # "foo bar baz"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->all_text;

  # "foo\nbarbaz\n"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->all_text(0);

append

  $dom = $dom->append('<p>Hi!</p>');

Append to element.

  # "<div><h1>A</h1><h2>B</h2></div>"
  $dom->parse('<div><h1>A</h1></div>')->at('h1')->append('<h2>B</h2>');

append_content

  $dom = $dom->append_content('<p>Hi!</p>');

Append to element content.

  # "<div><h1>AB</h1></div>"
  $dom->parse('<div><h1>A</h1></div>')->at('h1')->append_content('B');

at

  my $result = $dom->at('html title');

Find a single element with CSS3 selectors. All selectors from Mojo::DOM::CSS are supported.

attrs

  my $attrs = $dom->attrs;
  my $foo   = $dom->attrs('foo');
  $dom      = $dom->attrs({foo => 'bar'});
  $dom      = $dom->attrs(foo => 'bar');

Element attributes.

charset

  my $charset = $dom->charset;
  $dom        = $dom->charset('UTF-8');

Alias for "charset" in Mojo::DOM::HTML.

children

  my $collection = $dom->children;
  my $collection = $dom->children('div');

Return a Mojo::Collection object containing the children of this element, similar to find.

content_xml

  my $xml = $dom->content_xml;

Render content of this element to XML.

find

  my $collection = $dom->find('html title');

Find elements with CSS3 selectors and return a Mojo::Collection object. All selectors from Mojo::DOM::CSS 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(sub { shift->text })->each;

namespace

  my $namespace = $dom->namespace;

Find element namespace.

parent

  my $parent = $dom->parent;

Parent of element.

parse

  $dom = $dom->parse('<foo bar="baz">test</foo>');

Alias for "parse" in Mojo::DOM::HTML.

  # Parse UTF-8 encoded XML
  my $dom = Mojo::DOM->new->charset('UTF-8')->xml(1)->parse($xml);

prepend

  $dom = $dom->prepend('<p>Hi!</p>');

Prepend to element.

  # "<div><h1>A</h1><h2>B</h2></div>"
  $dom->parse('<div><h2>B</h2></div>')->at('h2')->prepend('<h1>A</h1>');

prepend_content

  $dom = $dom->prepend_content('<p>Hi!</p>');

Prepend to element content.

  # "<div><h2>AB</h2></div>"
  $dom->parse('<div><h2>B</h2></div>')->at('h2')->prepend_content('A');

replace

  $dom = $dom->replace('<div>test</div>');

Replace elements.

  # "<div><h2>B</h2></div>"
  $dom->parse('<div><h1>A</h1></div>')->at('h1')->replace('<h2>B</h2>');

replace_content

  $dom = $dom->replace_content('test');

Replace element content.

  # "<div><h1>B</h1></div>"
  $dom->parse('<div><h1>A</h1></div>')->at('h1')->replace_content('B');

root

  my $root = $dom->root;

Find root node.

text

  my $trimmed   = $dom->text;
  my $untrimmed = $dom->text(0);

Extract text content from 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>")->div->text;

  # "foo\nbaz\n"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->text(0);

text_after

  my $trimmed   = $dom->text_after;
  my $untrimmed = $dom->text_after(0);

Extract text content immediately following element, smart whitespace trimming is enabled by default.

  # "baz"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->p->text_after;

  # "baz\n"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->p->text_after(0);

text_before

  my $trimmed   = $dom->text_before;
  my $untrimmed = $dom->text_before(0);

Extract text content immediately preceding element, smart whitespace trimming is enabled by default.

  # "foo"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->p->text_before;

  # "foo\n"
  $dom->parse("<div>foo\n<p>bar</p>baz\n</div>")->div->p->text_before(0);

to_xml

  my $xml = $dom->to_xml;

Render DOM to XML.

tree

  my $tree = $dom->tree;
  $dom     = $dom->tree(['root', ['text', 'lalala']]);

Alias for "tree" in Mojo::DOM::HTML.

type

  my $type = $dom->type;
  $dom     = $dom->type('div');

Element type.

  $dom->children->each(sub { say $_->type });

xml

  my $xml = $dom->xml;
  $dom    = $dom->xml(1);

Alias for "xml" in Mojo::DOM::HTML.

CHILD ELEMENTS

In addition to the methods above, many child elements are also automatically available as object methods, which return a Mojo::DOM or Mojo::Collection object, depending on number of children.

  say $dom->div->text;
  say $dom->div->[23]->text;
  $dom->div->each(sub { say $_->text });

ELEMENT ATTRIBUTES

Direct hash access to element attributes is also possible.

  say $dom->{foo};
  say $dom->div->{id};

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicio.us.