extrapolates a method from an object from string, so 'boop.bap' gets called from the provided context with the provided params

callFuncFromString.js

var callFuncFromString = function (funcString, context, params) {
  // funcString should be a string like so 'boop.bap', no () at the end
  // parameters should be an array of the func's parameters, for .apply()

  var layers = funcString.split('.')

  layers.forEach(function (val) {
    context = context[val]
  })

  return context.apply(this, params)
}