ZK Component Reference/Input/Textbox

Textbox

• Demonstration: Textbox
• Java API: Textbox
• JavaScript API: Textbox
• Style Guide: Textbox

Employment/Purpose

A textbox is used to let users input textual data.

You colud assign value, type, constraint, rows, cols to a textbox using the corresponding properties. When you assign the property type to a string value "password" when multiline is false (multiline will be true if you set rows larger than 1 or set multiline to true directly) then any character in this component will replace by '*'.

You could also assign a constraint value with a regular expression string or a default constraint expression (available value is "no empty"). When user change the value of textbox, it will cause a validating process to validate the value. If the validation fails, then a notification will pop up.

Example

<textbox value="text..." />
<textbox value="secret" type="password" />
<textbox constraint="/.+@.+\.[a-z]+/: Please enter an e-mail address" />
<textbox rows="5" cols="40">
	<attribute name="value">
text line1... 
text line2...
	</attribute>
</textbox>

To specify multilines value, you can use the attribute element or 
 as shown below

<textbox rows="5" cols="40">
	<attribute name="value">
text line1... 
text line2...
	</attribute>
</textbox>
<textbox value="Line 1&#x0d;Line 2" rows="3"/>

Properties

Tabbable

By specifying a true, the tabbox can insert a long space or format the content inside textbox conveniently. For example,

<textbox tabbable="true"/>

Type

The type attribute can be used with the textbox based components and can be given the value password. By setting the type as password the text that is entered into the box cannot be viewed and is replaced by stars.

Username: <textbox/>
Password: <textbox type="password"/>

since 6.5.0

The type attribute support HTML 5 defined types tel, email and url.

Phone: <textbox type="tel"/>
Email: <textbox type="email"/>
WebSite: <textbox type="url"/>

Constraint

You could specify what value to accept for input controls by use of the constraint property. It could be a combination of no empty, and/or a regular expression.

To specify two or more constraints, use comma to separate them as follows.

<textbox constraint="no empty,/.+@.+\.[a-z]+/"/>

To specify a regular expression, you may have to use the character / to enclose the regular expression as follows.

<textbox constraint="/.+@.+\.[a-z]+/"/>

Notes:

• The above statement is XML, so do not use \\ to specify a backslash. However typing \\ is necessary, if writing in Java.

new Textbox().setConstraint("/.+@.+\\.[a-z]+/");

• You are allowed to mix regular expressions with other constraints by separating them with a comma.

If you prefer to display different message to the default one, you can append the error message to the constraint with a colon.

<textbox constraint="/.+@.+\.[a-z]+/: e-mail address only"/>

Notes:

• The error message, if specified, must be the last element and start with colon.
• To support multiple languages, you could use the 「l」 function as depicted in the Internationalization chapter.

<textbox constraint="/.+@.+\.[a-z]+/: ${c:l('err.email.required')}"/>

Inherited Functions

Please refer to InputElement for inherited functions, such as in-place edition.

Supported Events

Name	Event Type
None	None

• Inherited Supported Events: InputElement

Supported Children

*NONE

Use Cases

Version	Description	Example Location

Browser Limitations

Browser	description
IE	<textbox value="color" style="color:red !important;" disabled="true"/> There is no way to change the text color in a disabled input in IE.

Version History

Version	Date	Content