# <netui:label> Tag

Generates styled text based on a String literal or data binding expression.

## Syntax

<netui:label
[dataformatas="string_dataFormatAs"]
[defaultValue="string_defaultValue"]
[escapeWhiteSpaceForHtml="boolean_escapeWhiteSpace"]
[id="string_id"]
[onClick="string_onClick"]
[onDblClick="string_onDblClick"]
[onKeyDown="string_onKeyDown"]
[onKeyPress="string_onKeyPress"]
[onKeyUp="string_onKeyUp"]
[onMouseDown="string_onMouseDown"]
[onMouseMove="string_onMouseMove"]
[onMouseOut="string_onMouseOut"]
[onMouseOver="string_onMouseOver"]
[onMouseUp="string_onMouseUp"]
[style="string_Style"]
[styleClass="string_Class"]
[tabindex="string_tabIndex"]
[tagId="string_tagId"]
value="string_or_expression_value" />

## Description

Generates styled text based on a String literal or data binding expression.

The <netui:label> tag is similar to the <netui:content> tag, except with respect to the way that it treats characters sensitive to HTML browsers. The <netui:label> tag filters the input string for browser-sensitive characters and replaces these characters with the corresponding entity strings. For example, if you pass the string '&amp;' to a <netui:label> tag, the string '&amp;amp;' will be written to the HTML source file, and the following will be displayed in the browser: '&amp;'.

The following table shows how the <netui:label> and <netui:content> tags treat HTML-sensitive characters.

> tag | generated HTML source | displayed in browser
> <netui:content value="&amp;"/> | &amp; | &
> <netui:label value="&amp;"/> | &amp;amp; | &amp;

Note: escaping is not applied to browser-sensitive characters in the `defaultValue` attribute.

## Attributes

dataformatas | The data format of the output.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
defaultValue | A literal or data binding expression default value that will be used in the event that the `value` attribute resolves to NULL. If the `defaultValue` is an expression, then any format tags (<netui:formatString>, etc.) will be applied to the value. If the `defaultValue` is not an expression, format tags will not be applied. If the `defaultValue` contains an entity string, such as "&nbsp;", then the default value is output without applying any escaping to it.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
escapeWhiteSpaceForHtml | Boolean. If set to true, white space will be escaped before it is output to the page. Default value is false.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
id | The id attribute is deprecated, use the tagId attribute instead. The id attribute of the rendered HTML tag. You should use the tagId attribute which will encode the id correctly for containers such as the Portal which needs to rewrite id's to make them unique.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
onClick | The onClick JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onDblClick | The onDblClick JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyDown | The onKeyDown JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyPress | The onKeyPress JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyUp | The onKeyUp JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseDown | The onMouseDown JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseMove | The onMouseMove JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseOut | The onMouseOut JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseOver | The onMouseOver JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseUp | The onMouseUp JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
style | Sets the style of the rendered HTML tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
styleClass | The class of the rendered HTML tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
tabindex | The tabIndex of the rendered HTML tag. This attribute determines the position of the rendered HTML tag in the sequence of tags that the user may advance through by pressing the TAB key.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
tagId | String value. Sets the `id` (or `name`) attribute of the rendered HTML tag. Note that the real id attribute rendered in the browser may be changed by the application container (for example, Portal containers may change the rendered id value to ensure the uniqueness of id's on the page). In this case, the real id rendered in the browser may be looked up through the JavaScript function getNetuiTagName( tagId, tag ). For example, assume that some tag's `tagId` attribute is set to `foo`.
        <netui:textBox tagId="foo" />
Then the following JavaScript function will return the real id attribute rendered in the browser:
        getNetuiTagName( "foo", this )
To get a <netui:form> element and all of its children elements in JavaScript, use the same JavaScript function `getNetuiTagName( tagId, tag )`. For example, assume that there is a <netui:form> whose tagId attribute is set to `bar`.
        <netui:form tagId="bar" >
Then the following JavaScript function will return the <netui:form> element and its children (packaged as an array).
        document[getNetuiTagName( "bar", this )]
To retreive the value entered into a <netui:textBox> within the <netui:form> tag, use the following JavaScript expression.
        document[getNetuiTagName("bar", this)][getNetuiTagName("foo", this)].value
The second parameter ensures that the JavaScript function begins its search within the correct Portlet scope. Pass the JavaScript keyword `this` as the second parameter. For detailed information on using the function `getNetuiTagName( tagId, tag )` see Using JavaScript in Page Flow and Portal Applications.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
value | A literal or data binding expression.
Required | Supports runtime expression evaluation | Data bindable
Yes | Yes | Read Only

## Sample

In this first sample, a <netui:label> tag displays the Form Bean's firstName property. The <netui:label> tag will resolve this data binding expression, and display its value.

        <netui:label value="{actionForm.firstName}" />

In this next sample, the `value` attribute will resolve to null. This causes the `defaultValue` to be displayed. The user will see ' '.

        <netui:label value="{pageFlow.somethingNull}" defaultValue="&nbsp;"/>

In this next sample, the HTML will contain the text "&amp;nbsp;" and the user will see '&nbsp;'

        <netui:label value="{pageFlow.somethingNull}" defaultValue="&amp;nbsp;"/>

## Code Sample

[BEA_HOME]/weblogic81/samples/workshop/SamplesApp/WebApp/tagSamples/netui/label/

## Related Topics

<netui:label> Tag Sample

<netui:content> Tag