DevGuru JavaScript OBJECT: FileUpload



			OBJECT: FileUpload A FileUpload object provides a field in which the user can enter a file name to be uploaded and used as input and is created with every instance of an HTML <INPUT> tag (with the 'type' attribute set to 'file') 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 form Property This property returns a reference to the parent Form of the FileUpload object. Syntax: object.form name Property This property sets or returns the value of the FileUpoad object's name attribute. Syntax: object.name type Property Every element on a form has an associated type property. In the case of a FileUpload object, the value of this property is always 'file'. Syntax: object.type value Property This property sets or returns the FileUpload object's value attribute. This is a string input by the user that specifies the file to upload. Syntax: object.value METHODS blur Method This method removes the focus from the specified FileUpload object. Syntax: object.blur( ) click Method This method simulates a mouse-click on the FileUpload object. Syntax: object.click( ) focus Method This method gives focus to the specified FileUpload object. Syntax: object.focus( ) handleEvent Method This method calls the handler for the specified event. Syntax: object.handleEvent(event) EVENT HANDLERS onBlur Event handler This event handler executes some specified JavaScript code on the occurrence of a blur event (when the FileUpload object loses focus). Syntax: object.onBlur="myJavaScriptCode" onChange Event handler This event handler executes some specified JavaScript code on the occurrence of a click event (when the FileUpload object loses focus and its value has altered). Syntax: object.onClick="myJavaScriptCode" onFocus Event handler This event handler executes some specified JavaScript code on the occurrence of a focus event (when the FileUpload object receives focus). Syntax: object.onFocus="myJavaScriptCode"