2.4 Alternative way to write tags

• Raw HTML can be included via the htmltools::HTML() function. It prevents HTML content not being properly recognized:

  div("Hello <i>world</i>")

  <div>Hello &lt;i&gt;world&lt;/i&gt;</div>

  div(HTML("Hello <i>world</i>"))

  <div>Hello <i>world</i></div>

• When creating HTML elements for a Shiny app, it’s recommended to do so via R, instead of mixing it with raw HTML:

  # Same output
  HTML("<div>lorem</div>")

  <div>lorem</div>

  div("lorem")

  <div>lorem</div>

  # Differen class
  class(HTML("<div>lorem</div>"))

  [1] "html"      "character"

  class(div("lorem"))

  [1] "shiny.tag"

• The shiny.tag class is required for some tag-related functions which we’ll cover in the next sections.