A control that allows a user to enter a simple multi-line text.
Related sample: Form. All DhxForm Inputs
Related sample: Form. Textareas
You can easily add a Textarea control during initialization of a form:
var form = new dhx.Form("form_container", {
rows: [
{
type: "textarea",
name:"textarea",
label: "textarea",
labelWidth: "70px",
value: "Some nice text",
width:400
}
]
});
You can provide the following attributes in the configuration object of a Textarea:
type | (string) the type of a control, set it to "textarea" |
name | (string) the name of a control |
id | (string) the id of a control, auto-generated if not set |
value | (string) the initial value of the textarea |
validation | (string,function) the rule of input validation. Can be set in two ways:
|
placeholder | (string) a tip for the textarea |
readOnly | (boolean) defines whether a textarea is readonly |
resizable | (boolean) adds a resizer icon into a textarea, if set to true |
width | (string|number|"content") the width of a control |
height | (string|number|"content") the height of a control |
padding | (string|number) sets padding between a cell and a border of the Textarea control |
minlength | (string|number) the minimum number of characters allowed in the textarea |
maxlength | (string|number) the maximum number of characters allowed in the textarea |
css | (string) adds style classes to a control |
disabled | (boolean) defines whether a control is enabled (false) or disabled (true) |
hidden | (boolean) defines whether a control is hidden |
label | (string) specifies a label for a control |
labelWidth | (string|number) sets the width of the label of a control |
hiddenLabel | (boolean) invisible label that will be used to identify the input on the server side |
labelPosition | (string) defines the position of a label: "left"|"top" |
required | (boolean) defines whether a control is required |
helpMessage | (string) adds a help message to a control |
preMessage | (string) a message that contains instructions for interacting with the control |
successMessage | (string) a message that appears in case of successful validation of the control value |
errorMessage | (string) a message that appears in case of error during validation of the control value |
You can manipulate a Textarea control by using methods (or events) of the object returned by the getItem() method.
For example, you can get the value of the control:
var value = form.getItem("textarea").getValue();
clear | clears a value of a Textarea control |
clearValidate | clears validation of a Textarea control |
disable | disables a Textarea control on a page |
enable | enables a disabled Textarea control |
focus | sets focus to a control |
getProperties | returns an object with the available configuration attributes of the control |
getValue | returns the current value of a Textarea control |
hide | hides a Textarea control |
isDisabled | checks whether a Textarea control is disabled |
isVisible | checks whether a Textarea control is visible on the page |
setProperties | allows changing available configuration attributes of the control dynamically |
setValue | sets the value for a Textarea control |
show | shows a Textarea control on the page |
validate | validates a Textarea control |
afterChangeProperties | fires after configuration attributes of the control have been changed dynamically |
afterHide | fires after a control is hidden |
afterShow | fires after a control is shown |
afterValidate | fires after the control value is validated |
beforeChangeProperties | fires before configuration attributes of the control are changed dynamically |
beforeHide | fires before a control is hidden |
beforeShow | fires before a control is shown |
beforeValidate | fires before the control value is validated |
change | fires on changing the value of a control |
input | fires when a user types some text in the textarea |