Fieldset is a grouping component with a content toggle feature.
import { FieldsetModule } from 'primeng/fieldset';A simple Fieldset is created with a legend property along with the content as children.
Content of the fieldset can be expanded and collapsed using toggleable option, default state is defined with collapsed option.
Header section can also be defined with custom content instead of primitive values.
Fieldset component uses the semantic fieldset element. When toggleable option is enabled, a clickable element with button role is included inside the legend element, this button has aria-controls to define the id of the content section along with aria-expanded for the visibility state. The value to read the button defaults to the value of the legend property and can be customized by defining an aria-label or aria-labelledby via the toggleButtonProps property.
The content uses region, defines an id that matches the aria-controls of the content toggle button and aria-labelledby referring to the id of the header.
| Key | Function |
|---|---|
| tab | Moves focus to the next the focusable element in the page tab sequence. |
| shift + tab | Moves focus to the previous the focusable element in the page tab sequence. |
| enter | Toggles the visibility of the content. |
| space | Toggles the visibility of the content. |