application.js

//= require jquery
//= require jquery_ujs
//= require_tree .
//  ^ I am assuming that bootstrap3-dialog is in the tree

//GLOBAL JQuery Functaionality
$(function(){

	/*** CONFIRM MODAL OVERRIDE ***/
	//override the use of js alert on confirms
	//requires bootstrap3-dialog from https://github.com/nakupanda/bootstrap3-dialog
	$.rails.allowAction = function(link){
		if( !link.is('[data-confirm]') )
			return true;
		BootstrapDialog.show({
			type: BootstrapDialog.TYPE_DANGER,
			title: 'Confirm',
			message: link.attr('data-confirm'),
			buttons: [{
				label: 'Accept',
				cssClass: 'btn-primary',
				action: function(dialogRef){
					link.removeAttr('data-confirm');
					link.trigger('click.rails');
					dialogRef.close();
				}
			}, {
				label: 'Cancel',
				action: function(dialogRef){
					dialogRef.close();
				}
			}]
		});
		return false; // always stops the action since code runs asynchronously
	};

  //Other global javascript stuffs
  //...

});