Prototype JS implementation of the data-method HTML5 attribute.

data_method.js

Event.observe(window, 'dom:loaded', function() {
  setup_data_methods()
})

var setup_data_methods = function() {
  $$('a[data-method]').each(function(el) {
    el.stopObserving('click')
    el.observe('click', run_data_method)
  })
  
  $$('form[data-method]').each(function(el) {
    el.stopObserving('submit')
    el.observe('submit', run_data_method)
  })
}

var run_data_method = function(event) {
  el = event.element()
  data_method = el.readAttribute('data-method')
  
  if(data_method.match(/\(/)) {
    data_method.replace(/\)$/, ', event)')
  } else {
    data_method = data_method + '(event)'
  }
  
  eval(data_method)
}