Search results
Results from the WOW.Com Content Network
It is a piece of markup language used to adjust the behavior or display of an HTML element.HTML attributes are a modifier of a HTML element type. An attribute either modifies the default functionality of an element type or provides functionality to certain element types unable to function correctly without them. In HTML syntax, an attribute is ...
HTML attributes define desired behavior or indicate additional element properties. Most attributes require a value. In HTML, the value can be left unquoted if it does not include spaces (attribute=value), or it can be quoted with single or double quotes (attribute='value' or attribute="value"). In XML, those quotes are required.
[75] [76] Leaving attribute values unquoted is considered unsafe. [77] In contrast with name-value pair attributes, there are some attributes that affect the element simply by their presence in the start tag of the element, [7] like the ismap attribute for the img element. [78] There are several common attributes that may appear in many elements :
HTML attributes are often needed for various reasons. An attribute takes the basic form attribute="value", where combining multiple repeats this with attribute="value" attribute2="value2". Important points to realize: All table markup, except table end (|}), can have attributes added. Table and row markup ({| and |-) don't directly hold content.
A more complex example: the expression a [/ html / @lang = 'en'][@href = 'help.php'][1]/ @target selects the value of the target attribute of the first a element among the children of the context node that has its href attribute set to help.php, provided the document's html top-level element also has a lang attribute set to en. The reference to ...
In SGML, HTML and XML documents, the logical constructs known as character data and attribute values consist of sequences of characters, in which each character can manifest directly (representing itself), or can be represented by a series of characters called a character reference, of which there are two types: a numeric character reference and a character entity reference.
The property's name and value context are described by the item's vocabulary. Properties values usually consist of string values, but can also use URLs using the a element and its href attribute, the img element and its src attribute, or other elements that link to or embed external resources. [1]
[4] [5] Typically, in multilingual websites, the TLD (https://www.example.com) will get the x-default value in each URL set and the language folders/subdomains will be assigned hreflang values. The URL that is defined as the x-default for a certain document, can also be specified for a certain language or language and region at the same time.