htmlArea: Area component
In dashHtmlComponents: Vanilla HTML Components for 'Dash'

Description Usage Arguments Value Examples

Area is a wrapper for the <area> HTML5 element. For detailed attribute info see: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/area

htmlArea(children=NULL, id=NULL, n_clicks=NULL,
n_clicks_timestamp=NULL, key=NULL, role=NULL, alt=NULL,
coords=NULL, download=NULL, href=NULL, hrefLang=NULL,
media=NULL, rel=NULL, shape=NULL, target=NULL,
accessKey=NULL, className=NULL, contentEditable=NULL,
contextMenu=NULL, dir=NULL, draggable=NULL, hidden=NULL,
lang=NULL, spellCheck=NULL, style=NULL, tabIndex=NULL,
title=NULL, loading_state=NULL, ...)

`children`	A list of or a singular dash component, string or number. The children of this component
`id`	Character. 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.
`n_clicks`	Numeric. An integer that represents the number of times that this element has been clicked on.
`n_clicks_timestamp`	Numeric. 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.
`key`	Character. A unique identifier for the component, used to improve performance by React.js while rendering components See https://reactjs.org/docs/lists-and-keys.html for more info
`role`	Character. The ARIA role attribute
`alt`	Character. Alternative text in case an image can't be displayed.
`coords`	Character. A set of values specifying the coordinates of the hot-spot region.
`download`	Character. Indicates that the hyperlink is to be used for downloading a resource.
`href`	Character. The URL of a linked resource.
`hrefLang`	Character. Specifies the language of the linked resource.
`media`	Character. Specifies a hint of the media for which the linked resource was designed.
`rel`	Character. Specifies the relationship of the target object to the link object.
`shape`	Character.
`target`	Character.
`accessKey`	Character. Keyboard shortcut to activate or add focus to the element.
`className`	Character. Often used with CSS to style elements with common properties.
`contentEditable`	Character. Indicates whether the element's content is editable.
`contextMenu`	Character. Defines the ID of a <menu> element which will serve as the element's context menu.
`dir`	Character. Defines the text direction. Allowed values are ltr (Left-To-Right) or rtl (Right-To-Left)
`draggable`	Character. Defines whether the element can be dragged.
`hidden`	A value equal to: 'hidden', 'hidden' \| logical. Prevents rendering of given element, while keeping child elements, e.g. script elements, active.
`lang`	Character. Defines the language used in the element.
`spellCheck`	Character. Indicates whether spell checking is allowed for the element.
`style`	Named list. Defines CSS styles which will override styles previously set.
`tabIndex`	Character. Overrides the browser's default tab order and follows the one specified instead.
`title`	Character. Text to be displayed in a tooltip when hovering over the element.
`loading_state`	Lists containing elements 'is_loading', 'prop_name', 'component_name'. those elements have the following types: - is_loading (logical; optional): determines if the component is loading or not - prop_name (character; optional): holds which property is loading - component_name (character; optional): holds the name of the component that is loading. Object that holds the loading state object coming from dash-renderer
`...`	wildcards allowed have the form: ''data-', 'aria-''

named list of JSON elements corresponding to React.js properties and their values

# The URL below has been chunked to comply with CRAN
# requirements; the use of file.path is optional and not required
# for this component.
if (interactive() && require(dash)) {
  library(dash)
  library(dashHtmlComponents)

  app$layout(
    htmlDiv(list(
      htmlImg(src = file.path('https://upload.wikimedia.org',
              'wikipedia/commons/0/0c',
              'PIA17351-ApparentSizes-MarsDeimosPhobos-EarthMoon.jpg',
              fsep = '/'),
              useMap = '#image-map'),
      htmlMapEl(list(
        htmlArea(target='_blank',
                alt='Deimos',
                title='Deimos',
                href='https://en.wikipedia.org/wiki/Deimos_(moon)',
                coords='5,114,32,147',
                shape='rect'),
        htmlArea(target='_blank',
                alt='Phobos',
                title='Phobos',
                href='https://en.wikipedia.org/wiki/Phobos_(moon)',
                coords='113,196,32,103',
                shape='rect'),
        htmlArea(target='_blank',
                alt='Moon',
                title='Moon',
                href='https://en.wikipedia.org/wiki/Moon',
                coords='127,285,294,1',
                shape='rect')
        ),
        name = 'image-map'
      ),
      htmlDiv(children = 'Click on the image to visit a Wikipedia article',
              id = 'object-name')
      )
    )
  )

  app$run_server()
}