Question

将此代码放入clients.js.coffee并刷新我的浏览器后没有任何反应，然后我重新启动本地服务器，也没有发生任何事情，我该怎么办？

clients.js.coffee

jQuery ->
  $('#client_street_id').parent().hide()
  street = $('#client_street_id').html()

  $('#client_city_id').change ->
    city = $('#client_city_id :selected').text()
    escaped_city = city.replace(/([ #;&,.+*~\':"!^$[\]()=>|\/@])/g, '\\$1')
    options = $(street).filter("optgroup[label='#{escaped_city}']").html()

    if options
      $('#client_street_id').html(options)
      $('#client_street_id').parent().show()
    else
      $('#client_street_id').empty()
      $('#client_street_id').parent().hide()

的application.js

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD
// GO AFTER THE REQUIRES BELOW.
//
//= require jquery
//= require jquery_ujs
//= require bootstrap
//= require_tree .

Answer 1

固定缩进。

每个 - ＆gt;应该跟随2个空格缩进，直到你想要关闭该功能。

基本转换http://js2coffee.org/（仅为了给您一个想法）

jQuery ->
  $('#client_street_id').parent().hide()
  street = $('#client_street_id').html()
  $('#client_city_id').change ->
    city = $('#client_city_id :selected').text()
    escaped_city = city.replace(/([ #;&,.+*~\':"!^$[\]()=>|\/@])/g, '\\$1')
    options = $(street).filter("optgroup[label='#{escaped_city}']").html()
    if options
      $('#client_street_id').html(options)
      $('#client_street_id').parent().show()
    else
      $('#client_street_id').empty()
      $('#client_street_id').parent().hide()

无法运行CoffeeScript文件[Rails]

1 个答案: