DevGuru JavaScript OBJECT: Textarea



			OBJECT: Textarea A Textarea object provides a multi-line field in which the user can enter data and is created with every instance of an HTML <TEXTAREA> tag on a form. These objects are then stored in the elements array of the parent form and accessed using either the name defined within the HTML tag or an integer (with '0' being the first element defined, in source order, in the specified form). PROPERTIES defaultValue Property This property sets or returns a string indicating the initial value of the Textarea object. The value of this property initially reflects the value between the start and end <TEXTAREA> tags. Use of the defaultValue property, which can be done at any time, will override the original value. Syntax: object.defaultValue[ = "newdefaultvalue"] form Property This property returns a reference to the parent Form of the Textarea object. Syntax: object.form name Property This property sets or returns the value of the Textarea object's name attribute. Syntax: object.name type Property Every element on a form has an associated type property. In the case of a Textarea object, the value of this property is always "textarea". Syntax: object.type value Property This property sets or returns the Textarea object's value attribute. This is the text that is actually displayed in the Textarea and can be set at any time with any changes being immediately displayed. Syntax: object.value METHODS blur Method This method removes the focus from the specified Textarea object. Syntax: object.blur( ) focus Method This method gives focus to the specified Textarea object. Syntax: object.focus( ) handleEvent Method This method calls the handler for the specified event. Syntax: object.handleEvent(event) select Method This method is used to select and highlight all or a portion of a text in a Textarea element. Used in conjunction with the focus method, this makes it easy to prompt the user for input and places the cursor in the correct place. Syntax: object.select( ) EVENT HANDLERS onBlur Event handler This event handler executes some specified JavaScript code on the occurrence of a blur event (when the Textarea object loses focus). Syntax: object.onBlur="myJavaScriptCode" onChange Event handler This event handler executes some specified JavaScript code on the occurrence of a change event (when the Textarea object loses focus and its value has altered). Syntax: object.onChange="myJavaScriptCode" onFocus Event handler This event handler executes some specified JavaScript code on the occurrence of a focus event (when the Textarea object receives focus). Syntax: object.onFocus="myJavaScriptCode" onKeyDown Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyDown event (when a key is depressed). Syntax: object.onKeyDown="myJavaScriptCode" onKeyPress Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyPress event (when a key is depressed and held down). Syntax: object.onKeyPress="myJavaScriptCode" onKeyUp Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyUp event (when a key is released). Syntax: object.onKeyUp="myJavaScriptCode" onSelect Event handler This event handler executes some specified JavaScript code on the occurrence of a select event (when some text in the Textarea is selected). Syntax: object.onSelect="myJavaScriptCode"