# <netui:textArea> Tag

Renders an HTML <input> tag of type "text".

## Syntax

<netui:textArea
[accessKey="string_accessKey"]
[cols="integer_columns"]
dataSource="expression_datasource"
[defaultValue="string_or_expression_default"]
[disabled="boolean_disabled"]
[onBlur="string_onBlur"]
[onChange="string_onChange"]
[onClick="string_onClick"]
[onDblClick="string_onDblClick"]
[onFocus="string_onFocus"]
[onKeyDown="string_onKeyDown"]
[onKeyPress="string_onKeyPress"]
[onKeyUp="string_onKeyUp"]
[onMouseDown="string_onMouseDown"]
[onMouseMove="string_onMouseMove"]
[onMouseOut="string_onMouseOut"]
[onMouseOver="string_onMouseOver"]
[onMouseUp="string_onMouseUp"]
[onSelect="string_onSelect"]
[readonly="boolean_disabled"]
[rows="integer_rows"]
[style="string_Style"]
[styleClass="string_Class"]
[tabindex="string_tabIndex"]
[tagId="string_tagId"] />

## Description

Renders an HTML <input> tag of type "text".

        <input type="text"/>

## Attributes

accessKey | The keyboard navigation key for the element. The following values are not recommended because they are often used by browsers: `A, C, E, F, G, H, V, left arrow, and right arrow`
Required | Supports runtime expression evaluation | Data bindable
No | No | No
cols | Integer. The number of columns in the <netui:textArea>.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
dataSource | The `dataSource` attribute determines both (1) the source of populating data for the tag and (2) the object to which the tag submits data. For example, assume that the Controller file (= JPF file) contains a Form Bean with the property foo. Then the following <netui:textBox> tag will (1) draw populating data from the Form Bean's foo property and (2) submit user defined data to the same property. `<netui:textBox dataSource="{actionForm.foo}" />` The `dataSource` attribute takes either a data binding expression or the name of a Form Bean property. In the above example, `<netui:textBox dataSource="foo" />` would have the exactly same behavior. When the tag is used to submit data, the data binding expression must refer to a Form Bean property. In cases where the tag is not used to submit data, but is used for displaying data only, the data binding expression need not refer to a Form Bean property. For example, assume that myIterativeData is a member variable on the Controller file ( = JPF file). The following <netui-data:repeater> tag draws its data from myIterativeData. `<netui-data:repeater dataSource="{pageFlow.myIterativeData}">`
Required | Supports runtime expression evaluation | Data bindable
Yes | No | Read / Write
defaultValue | Use in <netui:checkBoxGroup>, <netui:checkBox>, <netui:radioButtonGroup>, and <netui:select> tags Sets the preselected value or values. The `defaultValue` attribute takes either a String literal or a data binding expression. If the `defaultValue` attribute has a String value (or if the data binding expression points to a String), then a single value will be preselected. If the `defaultValue` attribute points to a String[] object (or any object which can be iterated over), then multiple values will be preselected. Use in <netui:textArea> and <netui:textBox> tags Sets the initial display text. The `defaultValue` attribute takes either a String literal or a data binding expression that points to a String.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read / Write
disabled | Boolean. Determines whether the <netui:textArea> is disabled.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
onBlur | The onBlur JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onChange | The onChange JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | 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
onFocus | The onFocus 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
onSelect | The onSelect JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
readonly | Boolean. Determines whether text can be entered in the <netui:textArea> or not.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
rows | The number of rows in the <netui:textArea>
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
style | 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 tag in the sequence of page elements 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

## Sample

In this sample a text area reads from and writes to the Form Bean's description property. If the submitted value is NULL the default value is specified by the Page Flow's defaultDescription property.

         <netui:textArea dataSource="{actionForm.description}"
               defaultValue="{pageFlow.defaultDescription}"
               cols="25" rows="3" />

## Sample Code

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

## Related Topics

<netui:textArea> Sample