Create a fill-in-the-blank question

fitb(
  answer,
  width = calculated_width,
  num = NULL,
  ignore_case = FALSE,
  tol = NULL,
  ignore_ws = TRUE,
  regex = FALSE
)

Arguments

answer: The correct answer (can be a vector if there is more than one correct answer).
width: Width of the input box in characters. Defaults to the length of the longest answer.
num: Whether the input is numeric, in which case allow for leading zeroes to be omitted. Determined from the answer data type if not specified.
ignore_case: Whether to ignore case (capitalization).
tol: The tolerance within which numeric answers will be accepted; i.e. if abs(response - true.answer) < tol, the answer is correct (implies num=TRUE).
ignore_ws: Whether to ignore whitespace.
regex: Whether to use regex to match answers (concatenates all answers with `|` before matching).

Value

A character string with HTML code to generate an input box.

Details

Writes html code that creates an input box widget. Call this function inline in an RMarkdown document. See the Web Exercises RMarkdown template for examples of its use in RMarkdown.

Examples

# What is 2 + 2?
fitb(4, num = TRUE)
#> [1] "<input class='webex-solveme nospaces' size='1' data-answer='[\"4\"]'/>"

# What was the name of the Beatles drummer?
fitb(c("Ringo", "Ringo Starr"), ignore_case = TRUE)
#> [1] "<input class='webex-solveme nospaces ignorecase' size='11' data-answer='[\"Ringo\",\"Ringo Starr\"]'/>"

# What is pi to three decimal places?
fitb(pi, num = TRUE, tol = .001)
#> [1] "<input class='webex-solveme nospaces' data-tol='0.001' size='16' data-answer='[\"3.14159265358979\"]'/>"