This widget consists of two spans and a slider.
add_slider_with_text(my_html, into = "", text, text_id, value,
oninput = "", input_default = T, ...)html in a vector of strings; output from 'create_html'.
character string; unique identifier of a line in the html. Element id is highly recommended.
character string; description of the slider.
character string; id for the span tag which contains the text.
character string; the slider default value.
character string; command to run when slider updates.
T or F; whether to use the default oninput command (which controls the textbox).
Extra parameter that goes into a tag, e.g. In <div type = "xxx">, 'type = "xxx"' goes to ... .