Note : The
<LABEL> element is a new element introduced in HTML 4.0 draft specifications and is currently only supported by Internet Explorer 4.0.
<LABEL> element is used to link a text label to control like elements. Typically, these would be form elements - buttons, radio buttons, checkboxes etc. It provides for the kind of functionality built-in to most standard Windows based applications, whereby clicking the label next to a radio button is the same as clicking the radio button itself. Previously, in HTML, the radio button itself would have had to be clicked.
For example, consider the two radio buttons below:
They are constructed using standard
<INPUT TYPE="radio"... elements. Notice that to make a choice, you have to click the actual radio button itself. Clicking the label does not make the choice.
The same example, slightly modified, with
<LABEL> elements added to the radio buttons:
Note that now clicking the text labels activates the radio buttons - the kind of behaviour seen in standard Windows based applications. Those radio buttons have had
<LABEL> elements added to them, like so:
Make a choice:<BR>
<LABEL FOR="Red">Red : <INPUT TYPE="radio" NAME="Colour" VALUE="Red" ID="Red"></LABEL><BR>
<LABEL FOR="Blue">Blue : <INPUT TYPE="radio" NAME="Colour" VALUE="Blue" ID="Blue"></LABEL>
Note : If the
<LABEL> element surrounds the control for which it is a label, then the focus marker (seen when the
<LABEL> or control is clicked) will surround both elements. If the
<LABEL> doesn't surround the control, then the focus marker will only be seen around the
The attributes for the
<LABEL> element are:
ACCESSKEY attribute can be used to specify a shortcut key for the
<LABEL> (activated by pressing 'Alt' and the
ACCESSKEY together - like standard Windows applications menu shortcuts). The
ACCESSKEY setting does not have to be a character in the actual label text and the label text is not modified in any way to reflect that an
ACCESSKEY has been defined.
CLASS attribute is used to specify the
<LABEL> element as using a particular style sheet class. See the Style Sheets topic for details.
DATAFLD attribute can be used to specify a data column name from the Data source (see
DATASRC) that the
<LABEL> is bound to. For more information on the
DATAFLD attribute, see the Data Binding topic.
<LABEL> element is data-bound, it can accept straight text, or HTML from the data source. The
DATAFORMATAS attribute should be set to "
TEXT" or "
HTML" accordingly. with
DATAFORMATAS="HTML", the data provided for the
<LABEL> element is parsed and rendered when it's displayed.
For more information on the
DATAFORMATAS attribute, see the Data Binding topic.
DATASRC attribute can be used to specify a data source that the
<LABEL> is bound to. For more information on the
DATASRC attribute, see the Data Binding topic.
FOR attribute should directly reflect the
ID attribute of the element which the
<LABEL> is to be linked to. For example, in the above example, the two
<LABEL> elements are linked to their respective radio buttons by their
ID attributes. Note that the
FOR attribute is theoretically unnecessary, if the
<LABEL> element wraps the control it's a label for. Using the
FOR attribute will ensure proper functionality though.
ID attribute can be used to either reference a unique style sheet identifier, or to provide a unique name for the
<LABEL> element for scripting purposes. Any
<LABEL> element with an
ID attribute can be directly manipulated in script by referencing its
ID attribute, rather than working through the All collection to determine the element. See the Scripting introduction topic for more information.
LANG attribute can be used to specify what language the
<LABEL> element is using. It accepts any valid ISO standard language abbreviation (for example
"en" for English,
"de" for German etc.) For more details, see the Document Localisation section for more details.
LANGUAGE attribute can be used to expressly specify which scripting language Internet Explorer 4.0 uses to interpret any scripting information used in the
<LABEL> element. It can accept values of
LANGUAGE attribute is set.
As well as using previously defined style sheet settings, the
<LABEL> element can have in-line stylings attached to it. See the Style Sheets topic for details.
The Internet Explorer 4.0 (and above) specific
TITLE attribute is used for informational purposes. If present, the value of the
TITLE attribute is presented as a ToolTip when the users mouse hovers over the
<LABEL> element in a document is an object that can be manipulated through scripting. Note that scripting of the
<LABEL> element/object is only supported by Internet Explorer 4.0 in its Dynamic HTML object model. Netscape does not support direct scripting of the
<LABEL> element at all.
<LABEL...> element/object supports all of the standard Dynamic HTML properties (i.e. className, document, id, innerHTML, innerText, isTextEdit, lang, language, offsetHeight, offsetLeft, offsetParent, offsetTop, offsetWidth, outerHTML, outerText, parentElement, parentTextEdit, sourceIndex, style, tagName and title). Details of these can be found in the standard Dynamic HTML properties topics.
<LABEL> element supports the accessKey, dataFld, dataFormatAs, dataSrc and htmlFor, which directly reflect their attribute values.
<LABEL...> element/object supports all of the standard Dynamic HTML methods (i.e. click, contains, getAttribute, insertAdjacentHTML, insertAdjacentText, removeAttribute, scrollIntoView and setAttribute). Details of these can be found in the standard Dynamic HTML Methods topics.
<LABEL...> element/object supports all of the standard Dynamic HTML events (i.e. onclick, ondblclick, ondragstart, onfilterchange, onhelp, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup and onselectstart). Details of these can be found in the standard Dynamic HTML events topics.
Note : The
onclick event for the
<LABEL> element occurs before it is propagated to the element referenced in the
FOR attribute (
© 1995-1998, Stephen Le Hunte
|file: /Techref/language/html/ib/Forms/label.htm, 12KB, , updated: 2006/5/22 22:37, local time: 2018/12/10 23:34,
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