Reference & Documentation

A H2 component.
H2 is a wrapper for the <h2> HTML5 element.
For detailed attribute info see:

Keyword arguments:

  • children (a list of or a singular dash component, string or number; optional):
    The children of this component.

  • id (string; optional):
    The ID of this component, used to identify dash components in
    callbacks. The ID needs to be unique across all of the components
    in an app.

  • accessKey (string; optional):
    Keyboard shortcut to activate or add focus to the element.

  • aria-* (string; optional):
    A wildcard aria attribute.

  • className (string; optional):
    Often used with CSS to style elements with common properties.

  • contentEditable (string; optional):
    Indicates whether the element’s content is editable.

  • contextMenu (string; optional):
    Defines the ID of a <menu> element which will serve as the
    element’s context menu.

  • data-* (string; optional):
    A wildcard data attribute.

  • dir (string; optional):
    Defines the text direction. Allowed values are ltr (Left-To-Right)
    or rtl (Right-To-Left).

  • draggable (string; optional):
    Defines whether the element can be dragged.

  • hidden (a value equal to: ‘hidden’, ‘HIDDEN’ | boolean; optional):
    Prevents rendering of given element, while keeping child elements,
    e.g. script elements, active.

  • key (string; optional):
    A unique identifier for the component, used to improve performance
    by React.js while rendering components See for more info.

  • lang (string; optional):
    Defines the language used in the element.

  • loading_state (dict; optional):
    Object that holds the loading state object coming from

    loading_state is a dict with keys:

    • component_name (string; optional):
      Holds the name of the component that is loading.

    • is_loading (boolean; optional):
      Determines if the component is loading or not.

    • prop_name (string; optional):
      Holds which property is loading.

  • n_clicks (number; default 0):
    An integer that represents the number of times that this element
    has been clicked on.

  • n_clicks_timestamp (number; default -1):
    An integer that represents the time (in ms since 1970) at which
    n_clicks changed. This can be used to tell which button was
    changed most recently.

  • role (string; optional):
    The ARIA role attribute.

  • spellCheck (string; optional):
    Indicates whether spell checking is allowed for the element.

  • style (dict; optional):
    Defines CSS styles which will override styles previously set.

  • tabIndex (string; optional):
    Overrides the browser’s default tab order and follows the one
    specified instead.

  • title (string; optional):
    Text to be displayed in a tooltip when hovering over the element.