tag
HTML Tag Object
tag() creates an HTML tag definition. Note that all of the valid HTML5
tags are already defined in the tags environment so these
functions should only be used to generate additional tags.
tagAppendChild() and tagList() are for supporting package
authors who wish to create their own sets of tags; see the contents of
bootstrap.R for examples.
Usage
tagList(...)tagAppendAttributes(tag, ...)
tagHasAttribute(tag, attr)
tagGetAttribute(tag, attr)
tagAppendChild(tag, child)
tagAppendChildren(tag, ..., list = NULL)
tagSetChildren(tag, ..., list = NULL)
tag(`_tag_name`, varArgs, .noWS = NULL)
Arguments
- ...
Unnamed items that comprise this list of tags.
- tag
A tag to append child elements to.
- attr
The name of an attribute.
- child
A child element to append to a parent tag.
- list
An optional list of elements. Can be used with or instead of the
...items.- _tag_name
HTML tag name
- varArgs
List of attributes and children of the element. Named list items become attributes, and unnamed list items become children. Valid children are tags, single-character character vectors (which become text nodes), and raw HTML (see
HTML). You can also pass lists that contain tags, text nodes, and HTML.- .noWS
Character vector used to omit some of the whitespace that would normally be written around this tag. Valid options include
before,after,outside,after-begin, andbefore-end. Any number of these options can be specified.
Value
An HTML tag object that can be rendered as HTML using
as.character().
Examples
# NOT RUN {
tagList(tags$h1("Title"),
tags$h2("Header text"),
tags$p("Text here"))
# Can also convert a regular list to a tagList (internal data structure isn't
# exactly the same, but when rendered to HTML, the output is the same).
x <- list(tags$h1("Title"),
tags$h2("Header text"),
tags$p("Text here"))
tagList(x)
# suppress the whitespace between tags
oneline <- tag("span",
tag("strong", "Super strong", .noWS="outside")
)
cat(as.character(oneline))
# }