Input that allows free-form text as its value.

A textbox role is assigned to the element which allows the user to type some text into the field. In normal HTML semantics, this is achieved using input type="text". If this information is not intimated to the user in a different way and screen readers do not recognize it, the textbox role can be used.

Usually a textbox provides a possibility to have a single line of text and on hitting Enter submits the form. To have more lines of text input, type="textarea" is used. The same can be achieved with multiline property of aria. Set aria-multiline to true.

If the aria-multiline attribute is true, the widget accepts line breaks within the input, as in an HTML textarea. Otherwise, this is a simple text box. The intended use is for languages that do not have a text input element, or cases in which an element with different semantics is repurposed as a text field.

Note: In most user agent implementations, the default behavior of the Enter or Return key is different between the single-line and multi-line text fields in HTML. When user has focus in a single-line input type="text" element, the keystroke usually submits the form. When user has focus in a multi-line textarea element, the keystroke inserts a line break. The aria textbox role differentiates these types of boxes with the aria-multiline attribute, so authors are advised to be aware of this distinction when designing the field.