Evaluate JS string or file in the current context

Evaluate a provided JavaScript file or string within the initialised context. Note that this method should only be used for initialising functions or values within the context, no values are returned from this function. See the $call() method for returning values.

source(file = NULL, code = NULL)

Format

An object of class NULL of length 0.

Arguments

file

A path to the JavaScript file to load

code

A single string of JavaScript to evaluate

Value

No return value, called for side effects

Examples

if (FALSE) { # \dontrun{
ctx <- JSContext$new()
ctx$source(file = "path/to/file.js")
ctx$source(code = "1 + 2")
} # }