HTML-Object
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lib/HTML/Object/DOM/Element/Input.pm view on Meta::CPAN
=head2 valueAsNumber
This returns a double, which represents the value of the element, interpreted as one of the following, in order:
=over 4
=item A time value
=item A number
=item NaN (C<undef>) if conversion is impossible
=back
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/valueAsNumber>
=head2 webkitEntries
This always returns C<undef> under perl.
Under JavaScript, this returns an Array of C<FileSystemEntry> objects that describes the currently selected files or directories.
lib/HTML/Object/DOM/Element/Media.pm view on Meta::CPAN
# <audio></audio>
$obj->disableRemotePlayback = 1; # true
# <audio disableremoteplayback=""></audio>
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/disableRemotePlayback>
=head2 duration
This returns whatever number you set it to under perl, as a L<Module::Generic::Number> object.
Normally, under JavaScript, this returns a read-only double-precision floating-point value indicating the total duration of the media in seconds. If no media data is available, the returned value is C<NaN>. If the media is of indefinite length (such ...
Example:
my $obj = $doc->createElement('video');
say( $obj->duration ); # NaN
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/duration>
=head2 ended
Returns a Boolean that indicates whether the media element has finished playing.
Example:
my $obj = $doc->createElement('video');
lib/HTML/Object/DOM/Number.pm view on Meta::CPAN
##----------------------------------------------------------------------------
package HTML::Object::DOM::Number;
BEGIN
{
use strict;
use warnings;
use parent qw( Module::Generic::Number );
use vars qw( $EPSILON $VERSION );
use Config;
# use Machine::Epsilon ();
use POSIX qw( Inf NaN );
use constant {
MAX_SAFE_INTEGER => (POSIX::pow(2,53) - 1),
# MAX_VALUE => (1.7976931348623157 * POSIX::pow(10,308)),
MAX_VALUE => (POSIX::pow(2, $Config::Config{use64bitint} eq 'define' ? 64 : 32)),
MIN_SAFE_INTEGER => (-(POSIX::pow(2,53) - 1)),
MIN_VALUE => POSIX::pow(2, -1074),
# <https://perldoc.perl.org/perldata#Special-floating-point:-infinity-(Inf)-and-not-a-number-(NaN)>
# NEGATIVE_INFINITY => -9**9**9,
NEGATIVE_INFINITY => -Inf,
POSITIVE_INFINITY => Inf,
};
our $EPSILON;
our $VERSION = 'v0.2.0';
};
use strict;
use warnings;
lib/HTML/Object/DOM/Number.pm view on Meta::CPAN
# Note: property MIN_VALUE is a constant
# Note: property NEGATIVE_INFINITY is a constant
# Note: property POSITIVE_INFINITY is a constant
sub isFinite { return( $_[1] != Inf ); }
sub isInteger { return( shift->_is_integer( $_[0] ) ); }
sub isNaN { return( POSIX::isnan( $_[1] ) ); }
sub isSafeInteger { return( $_[0]->_is_integer( $_[1] ) && abs( $_[1] ) < MAX_SAFE_INTEGER ); }
sub parseFloat { return( shift->new( shift( @_ ) ) ); }
sub parseInt { return( shift->new( shift( @_ ) ) ); }
1;
# NOTE: POD
__END__
lib/HTML/Object/DOM/Number.pm view on Meta::CPAN
my $smallNumber = (-HTML::Object::DOM::Number->MAX_VALUE) * 2;
if( $smallNumber == HTML::Object::DOM::Number->NEGATIVE_INFINITY )
{
$smallNumber = returnFinite();
}
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/NEGATIVE_INFINITY>
=head2 NaN
Special "Not a Number" value.
This is actually a value exported by L<POSIX>
Example:
sub sanitise
{
my $x = shift( @_ );
if( isNaN($x) )
{
return( HTML::Object::DOM::Number->NaN );
}
return($x);
}
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/NaN>
=head2 POSITIVE_INFINITY
Special value representing infinity. Returned on overflow.
Example:
my $bigNumber = HTML::Object::DOM::Number->MAX_VALUE * 2;
if( $bigNumber == HTML::Object::DOM::Number->POSITIVE_INFINITY )
lib/HTML/Object/DOM/Number.pm view on Meta::CPAN
=head2 isFinite
Determine whether the passed value is a finite number.
Example:
HTML::Object::DOM::Number->isFinite($value)
HTML::Object::DOM::Number->isFinite(Infinity); # false
HTML::Object::DOM::Number->isFinite(NaN); # false
HTML::Object::DOM::Number->isFinite(-Infinity); # false
HTML::Object::DOM::Number->isFinite(0); # true
HTML::Object::DOM::Number->isFinite(2e64); # true
HTML::Object::DOM::Number->isFinite('0'); # false, would've been true with
# global isFinite('0')
HTML::Object::DOM::Number->isFinite(undef); # false, would've been true with
# global isFinite(undef)
lib/HTML/Object/DOM/Number.pm view on Meta::CPAN
HTML::Object::DOM::Number->isInteger(value)
HTML::Object::DOM::Number->isInteger(0); # true
HTML::Object::DOM::Number->isInteger(1); # true
HTML::Object::DOM::Number->isInteger(-100000); # true
HTML::Object::DOM::Number->isInteger(99999999999999999999999); # true
HTML::Object::DOM::Number->isInteger(0.1); # false
HTML::Object::DOM::Number->isInteger(Math->PI); # false
HTML::Object::DOM::Number->isInteger(NaN); # false
HTML::Object::DOM::Number->isInteger(Infinity); # false
HTML::Object::DOM::Number->isInteger(-Infinity); # false
HTML::Object::DOM::Number->isInteger('10'); # false
HTML::Object::DOM::Number->isInteger(true); # false
HTML::Object::DOM::Number->isInteger(false); # false
HTML::Object::DOM::Number->isInteger([1]); # false
HTML::Object::DOM::Number->isInteger(5.0); # true
HTML::Object::DOM::Number->isInteger(5.000000000000001); # false
HTML::Object::DOM::Number->isInteger(5.0000000000000001); # true
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger>
=head2 isNaN
Determine whether the passed value is C<NaN>.
Example:
HTML::Object::DOM::Number->isNaN(value)
HTML::Object::DOM::Number->isNaN(NaN); # true
HTML::Object::DOM::Number->isNaN(HTML::Object::DOM::Number->NaN); # true
HTML::Object::DOM::Number->isNaN(0 / 0); # true
# e->g. these would have been true with global isNaN()
HTML::Object::DOM::Number->isNaN('NaN'); # false
HTML::Object::DOM::Number->isNaN(undefined); # false
HTML::Object::DOM::Number->isNaN({}); # false
HTML::Object::DOM::Number->isNaN('blabla'); # false
# These all return false
HTML::Object::DOM::Number->isNaN(true);
HTML::Object::DOM::Number->isNaN(undef);
HTML::Object::DOM::Number->isNaN(37);
HTML::Object::DOM::Number->isNaN('37');
HTML::Object::DOM::Number->isNaN('37.37');
HTML::Object::DOM::Number->isNaN('');
HTML::Object::DOM::Number->isNaN(' ');
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN>
=head2 isSafeInteger
Determine whether the passed value is a safe integer (number between -(2^53 - 1) and 2^53 - 1).
Example:
HTML::Object::DOM::Number->isSafeInteger(3); # true
HTML::Object::DOM::Number->isSafeInteger(POSIX::pow(2, 53)); # false
HTML::Object::DOM::Number->isSafeInteger(POSIX::pow(2, 53) - 1); # true
HTML::Object::DOM::Number->isSafeInteger(NaN); # false
HTML::Object::DOM::Number->isSafeInteger(Infinity); # false
HTML::Object::DOM::Number->isSafeInteger('3'); # false
HTML::Object::DOM::Number->isSafeInteger(3.1); # false
HTML::Object::DOM::Number->isSafeInteger(3.0); # true
See also L<Mozilla documentation|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger>
=head2 parseFloat
Provided with a value and this will return a new L<HTML::Object::DOM::Number> object.
lib/HTML/Object/Number.pm view on Meta::CPAN
our $VERSION = 'v0.2.0';
};
use strict;
use warnings;
sub as_xml
{
my $self = shift( @_ );
my $n = $self->as_string;
return( "<Number>" . ( defined( $n ) ? $n : 'NaN' ) . "</Number>\n" );
}
sub evaluate { return( $_[0] ); }
# Return an empty hash
sub getAttributes { return( shift->new_hash ); }
# Return an empty array
sub getChildNodes { return( shift->new_array ); }
lib/HTML/Object/Number.pm view on Meta::CPAN
use HTML::Object::Number;
my $this = HTML::Object::Number->new ||
die( HTML::Object::Number->error, "\n" );
=head1 VERSION
v0.2.0
=head1 DESCRIPTION
This class holds simple numeric values. It does not support -0, +/- Infinity, or NaN, as the XPath spec says it should, but I am not hurting anyone I do not think.
=head1 METHODS
=head2 new
Provided with a C<number> and this creates a new L<HTML::Object::Number> object. Does some rudimentary numeric checking on the C<number> to ensure it actually is a number.
=head2 as_xml
Returns a string representation of the current value as xml.
lib/HTML/Object/XPath/Number.pm view on Meta::CPAN
else
{
$number =~ s/^[[:blank:]\h]*(.*)[[:blank:]\h]*$/$1/;
}
return( bless( \$number => ( ref( $this ) || $this ) ) );
}
sub as_string
{
my $self = shift( @_ );
return( defined( $$self ) ? $$self : 'NaN' );
}
sub as_xml
{
my $self = shift( @_ );
return( "<Number>" . ( defined( $$self ) ? $$self : 'NaN' ) . "</Number>\n" );
}
sub cmp
{
my $self = shift( @_ );
my( $other, $swap ) = @_;
return( $swap ? $other <=> $$self : $$self <=> $other );
}
sub evaluate { return( $_[0] ); }
lib/HTML/Object/XPath/Number.pm view on Meta::CPAN
use HTML::Object::XPath::Number;
my $num = HTML::Object::XPath::Number->new ||
die( HTML::Object::XPath::Number->error, "\n" );
=head1 VERSION
v0.2.0
=head1 DESCRIPTION
This module holds simple numeric values. It doesn't support -0, +/- Infinity, or NaN, as the XPath spec says it should.
=head1 METHODS
=head2 new
Provided with a C<number> and this creates a new L<HTML::Object::XPath::Number> object, with the value in C<number>. Does some
rudimentary numeric checking on C<number> to ensure it actually is a number.
=head2 as_string
Returns a string representation of the number, or C<NaN> is undefined.
=head2 as_xml
Same as L</as_string>, but in xml format.
=head2 cmp
Returns the equivalent of perl's own L<perlop/cmp> operation.
=head2 evaluate
lib/HTML/Object/XQuery.pod view on Meta::CPAN
$.isNumeric( "-10" );
$.isNumeric( "0" );
$.isNumeric( 0xFF );
$.isNumeric( "0xFF" );
$.isNumeric( "8e5" );
$.isNumeric( "3.1415" );
$.isNumeric( +10 );
$.isNumeric( 0144 );
# Yes, under perl, nan and Inf are considered a number. Don't believe me? Try:
# perl -MScalar::Util=looks_like_number -lE 'say looks_like_number("nan")'
$.isNumeric( NaN );
$.isNumeric( Inf );
# false (non-numeric)
$.isNumeric( "-0x42" );
$.isNumeric( "7.2acdgs" );
$.isNumeric( "" );
$.isNumeric( {} );
$.isNumeric( true );
$.isNumeric( undef );
lib/HTML/Object/XQuery.pod view on Meta::CPAN
=item * "{test: 1}" (test does not have double quotes around it).
=item * "{'test': 1}" ('test' is using single quotes instead of double quotes).
=item * "'test'" ('test' is using single quotes instead of double quotes).
=item * ".1" (a number must start with a digit; "0.1" would be valid).
=item * "undefined" (undefined cannot be represented in a JSON string; null, however, can be).
=item * "NaN" (NaN cannot be represented in a JSON string; direct representation of Infinity is also not permitted).
=back
The JSON standard does not permit "control characters" such as a tab or newline. An example like C<< $.parseJSON( '{ "testing":"1\t2\n3" }' ) >> will result in an error, because the JSON parser converts the string's tab and newline escapes into liter...
For details on the JSON format, see https://json.org/.
For example:
my $ref = $.parseJSON( '{ "name": "John" }' );
t/30.xquery.t view on Meta::CPAN
{
# true (numeric)
ok( $.isNumeric( "-10" ), '-10' );
ok( $.isNumeric( "0" ), '"0"' );
ok( $.isNumeric( 0xFF ), '0xFF' );
ok( $.isNumeric( "0xFF" ), '"0xFF"' );
ok( $.isNumeric( "8e5" ), '8e5' );
ok( $.isNumeric( "3.1415" ), '3.1415' );
ok( $.isNumeric( +10 ), '+10' );
ok( $.isNumeric( 0144 ), 'octal 0144' );
ok( $.isNumeric( 'nan' ), 'NaN' );
ok( $.isNumeric( 'inf' ), 'Infinity' );
# false (non-numeric)
ok( !$.isNumeric( "-0x42" ), '-0x42' );
ok( !$.isNumeric( "7.2acdgs" ), '7.2acdgs' );
ok( !$.isNumeric( "" ), '""' );
ok( !$.isNumeric( {} ), '{}' );
ok( !$.isNumeric( undef ), 'undef' );
};
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