add_js: Adds a custom JS function
In dqshiny: Enhance Shiny Apps with Customizable Modules

Description Usage Arguments Author(s) Examples

Adds the given JS function definition to the current shiny web app.

Before adding anything the code will be parsed with V8 if the package is available on your machine. If package is available and parsing fails, an error will be thrown.

After successfully adding a function it can be used with run_js.

1
2
3

add_js(type, function_text)

run_js(type, ...)

`type`	name of the function
`function_text`	JS function definition, this should be an anonymous function accepting exactly one argument
`...`	arguments to pass to the function, those will be combined to a list and end up as an array in JS, unnamed parameters will be available via params[0..], named parameters can also be used with params.name

richard.kunze

## Only run examples in interactive R sessions
if (interactive()) {

library(shiny)
shinyApp(
  ui = fluidPage(
    add_js(type="addValues", "function(params) {
      alert('Result is: ' + (parseInt(params[0]) + parseInt(params[1])));
    }"),
    add_js(type="myName", "function(params) {
      alert('My name is ' + params.name);
    }"),
    actionButton("btn1", "Add Values"),
    actionButton("btn2", "What's my name?")
  ),
  server = function(input, output) {
    observeEvent(input$btn1, run_js(type = "addValues", 17, 25))
    observeEvent(input$btn2, run_js(type = "myName", name = "Paul"))
  }
)

}