This function defines a set of web dependencies necessary for using Bootstrap components in a web page.

bootstrapLib(theme = NULL)



One of the following:

  • NULL (the default), which implies a "stock" build of Bootstrap 3.

  • A bslib::bs_theme() object. This can be used to replace a stock build of Bootstrap 3 with a customized version of Bootstrap 3 or higher.

  • A character string pointing to an alternative Bootstrap stylesheet (normally a css file within the www directory, e.g. www/bootstrap.css).


It isn't necessary to call this function if you use bootstrapPage() or others which use bootstrapPage, such fluidPage(), navbarPage(), fillPage(), etc, because they already include the Bootstrap web dependencies.