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Where element names the HTML element type, and attribute is the name of the attribute, set to the provided value. The value may be enclosed in single or double quotes, although values consisting of certain characters can be left unquoted in HTML (but not XHTML). [2] [3] Leaving attribute values unquoted is considered unsafe. [4]
A link relation is a descriptive attribute attached to a hyperlink in order to define the type of the link, or the relationship between the source and destination resources. The attribute can be used by automated systems, or can be presented to a user in a different way. In HTML these are designated with the rel attribute on link, a, or area ...
Meta refresh is a method of instructing a web browser to automatically refresh the current web page or frame after a given time interval, using an HTML meta element with the http-equiv parameter set to "refresh" and a content parameter giving the time interval in seconds.
[74] [75] Leaving attribute values unquoted is considered unsafe. [76] 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, [6] like the ismap attribute for the img element. [77] There are several common attributes that may appear in many elements :
The value of the statement, in either case, is contained in the content attribute, which is the only required attribute unless charset is given. charset is used to indicate the character set of the document, and is available in HTML5. Such elements must be placed as tags in the head section of an HTML or XHTML document.
As an origin, setting the attribute href, [26] creates a hyperlink; it can point to either another part of the document or another resource (e.g. a webpage) using an external URL. As a target, setting the name or id HTML attributes, allows the element to be linked from a Uniform Resource Locator (URL) via a fragment identifier. The two forms ...
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]
Dynamic HTML, or DHTML, is a term which was used by some browser vendors to describe the combination of HTML, style sheets and client-side scripts (JavaScript, VBScript, or any other supported scripts) that enabled the creation of interactive and animated documents.