Mark a spec slot as literal JavaScript

Alias for htmlwidgets::JS(). Only the function-valued gsm.viz slots are revived in the browser: tooltip$formatter, callbacks$onClick, callbacks$onHover, callbacks$onSelect, the two annotation label formatters, and scales$x$order. Anywhere else, bars() errors. Prefer the JSON-safe alternatives (tooltip$format, label format strings) where they suffice.

Usage

js_hook(...)

Arguments

...

Character strings of JavaScript, concatenated by newlines.

Value

A JS_EVAL string, as returned by htmlwidgets::JS().

Details

A function-valued scales$x$order is a facet_bars() feature: facetBars calls it once per facet as order(facetValue, facetData) to order that facet's categories. Plain bars() hands the slot to gsm.viz, which expects an array there and has no function branch.