Mark character strings as literal JavaScript code

This function JS() marks character vectors with a special class, so that it will be treated as literal JavaScript code when evaluated on the client-side.

JS(...)

Arguments

...

character vectors as the JavaScript source code (all arguments will be pasted into one character string)

Author

Yihui Xie

Examples

library(htmlwidgets)
JS('1 + 1')
#> [1] "1 + 1"
#> attr(,"class")
#> [1] "JS_EVAL"
list(x = JS('function(foo) {return foo;}'), y = 1:10)
#> $x
#> [1] "function(foo) {return foo;}"
#> attr(,"class")
#> [1] "JS_EVAL"
#> 
#> $y
#>  [1]  1  2  3  4  5  6  7  8  9 10
#> 
JS('function(x) {', 'return x + 1;', '}')
#> [1] "function(x) {\nreturn x + 1;\n}"
#> attr(,"class")
#> [1] "JS_EVAL"