Rails 3：如何从js.erb文件调用javascript函数

您不能只是将drag_drop_prep中的代码放入一个函数中，然后从application.html.erb和每个部分中调用该函数吗？我猜我误会了。

function prepdraggables(){  // declare all DOM elements with class draggable to be draggable  $( ".draggable" ).draggable( { revert : 'invalid' });  // declare all DOM elements with class legal to be droppable  $(".legal").droppable({    hoverClass : 'legal_hover',    drop : function(event, ui) {      var c = new Object();      c['die'] = ui.draggable.attr("id");      c['cell'] = $(this).attr("id");      c['authenticity_token'] = enpreURIComponent(window._token);      $.ajax({         type: "POST",         url: "/placeDie",         data: c,         timeout: 5000      });  }});}

在application.html.erb和undo.js.erb中：

prepdraggables();