Rails和JQuery下拉列表

Question

我正在尝试在Rails网站的ruby网站上使用JQuery制作菜单栏/下拉列表，我已将jquery代码包含在application.js文件中，因为我希望它适用于我网站中的每个文件，菜单在application.html.erb文件中，以便将视图干一点。

jQuery代码在第一次运行时效果很好，例如，我可以导航到页面并使用导航栏将我返回首页，但是一旦返回首页，除非我手动刷新页面，否则下拉列表将无法正常工作，就好像根本没有加载jquery一样，这可能是Rails缓存文件而不是重新加载它们导致我的文档.ready触发器混乱的结果吗？

任何帮助，将不胜感激，我如何才能使它连续运行

（application.js）jQuery：

( function( $ ) {
    $( document ).ready(function() {
        $('#cssmenu > ul').prepend('<li class=\"mobile\"><a href=\"#\"><span>Menu <i>&#9776;</i></span></a></li>');
        $('#cssmenu > ul > li > a').click(function(e) {
            $('#cssmenu li').removeClass('active');
            $(this).closest('li').addClass('active');
            var checkElement = $(this).next();
            if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
                $(this).closest('li').removeClass('active');
                checkElement.slideUp('normal');
            }
            if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
                $('#cssmenu ul ul:visible').slideUp('normal');
                checkElement.slideDown('normal');
            }
            if( $(this).parent().hasClass('mobile') ) {
                e.preventDefault();
                $('#cssmenu').toggleClass('expand');
            }
            if($(this).closest('li').find('ul').children().length == 0) {
                return true;
            } else {
                return false;
            }
        });

    });
} )( jQuery );

Application.HTML.ERB：

<div id='cssmenu'>
    <ul>
      <li class='has-sub'><a href='/'><span>Account Actions</span></a>
        <ul>
          <% if user_signed_in? %>
              <li><a href= <%= edit_user_registration_path %> ><span> <%=  t('editprofileuser') %></span></a></li>
              <li class='last'><a class="navbar-link" rel="nofollow" data-method="delete" href= <%= destroy_user_session_path %>><span><%=  t('logoutuser') %></span></a></li>
          <% elsif company_signed_in? %>
          <li><a href= <%= edit_company_registration_path %> ><span> <%=  t('editprofilecompany') %></span></a></li>
          <li class='last'><a class="navbar-link" rel="nofollow" data-method="delete" href= <%= destroy_company_session_path %>><span><%=  t('logoutcompany') %></span></a></li>
          <% else %>
              <li><a href= <%= new_user_registration_path %> ><span> <%=  t('signupuser') %></span></a></li>
              <li><a href= <%= new_user_session_path %> ><span> <%=  t('loginuser') %></span></a></li>
              <li><a href= <%= new_company_registration_path %> ><span> <%=  t('signupcompany') %></span></a></li>
              <li class='last'><a href= <%= new_company_session_path %> ><span><%=  t('logincompany') %></span></a></li>
          <% end %>
        </ul>
      </li>
      <li class='has-sub'><a><span>Navigation</span></a>
        <ul>
          <li class='last'><a href= '/'><span>Homepage</span></a></li>
          <li class='last'><a href= 'audits' ><span>View My Audits</span></a></li>
        </ul>
      </li>
      <li><a href= <%= root_path %> ></a>root</li>
      <% if user_signed_in? %>
          <li class='has-sub'><a href='#'><span><%= t('loggedinas') %> <%= current_user.email %></span></a>
      <% elsif company_signed_in? %>
          <li class='has-sub'><a href='#'><span><%= t('loggedinas') %> <%= current_company.email %></span></a>
      <% end %>
    </ul>
  </div>

application.CSS：

   @import url(http://fonts.googleapis.com/css?family=Open+Sans:400,600,300);
    @charset "UTF-8";
/* Base Styles */
#cssmenu,
#cssmenu ul,
#cssmenu li,
#cssmenu a {
    margin: 0;
    padding: 0;
    border: 0;
    list-style: none;
    font-weight: normal;
    text-decoration: none;
    line-height: 1;
    font-family: 'Open Sans', sans-serif;
    font-size: 14px;
    position: relative;
    }
#cssmenu a {
    line-height: 1.5;
    }
#cssmenu {
    width: 100%;
    background: #fff;
    }
#cssmenu > ul {
    border: 1px solid #000000;
    -moz-box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.2);
    -webkit-box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.2);
    box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.2);
    background: #565656;
    background: -moz-linear-gradient(#565656 0%, #323232 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #565656), color-stop(100%, #323232));
    background: -webkit-linear-gradient(#565656 0%, #323232 100%);
    background: linear-gradient(#565656 0%, #323232 100%);
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    }
#cssmenu > ul:after {
    clear: both;
    content: '';
    display: table;
    }
@media all and (max-width: 480px) {
    #cssmenu > ul {
        max-height: 32px;
        overflow: hidden;
        -webkit-transition: max-height 0.5s;
        transition: max-height 0.5s;
    }
    #cssmenu.expand ul {
        max-height: 900px;
    }
    }
#cssmenu > ul > li {
    border-right: 1px solid #000000;
    -moz-box-shadow: 1px 0 0 rgba(255, 255, 255, 0.2);
    -webkit-box-shadow: 1px 0 0 rgba(255, 255, 255, 0.2);
    box-shadow: 1px 0 0 rgba(255, 255, 255, 0.2);
    float: left;
    }
#cssmenu > ul > li.mobile {
    display: none;
    }
#cssmenu > ul > li.active {
    background: #444444;
    background: -moz-linear-gradient(#444444 0%, #323232 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #444444), color-stop(100%, #323232));
    background: -webkit-linear-gradient(#444444 0%, #323232 100%);
    background: linear-gradient(#444444 0%, #323232 100%);
    }
@media all and (max-width: 480px) {
    #cssmenu > ul > li {
        border-right: 0 none;
        -moz-box-shadow: 0 0 0 transparent;
        -webkit-box-shadow: 0 0 0 transparent;
        box-shadow: 0 0 0 transparent;
        display: block;
        float: none;
    }
    #cssmenu > ul > li.mobile {
        display: block;
    }
    #cssmenu > ul > li.mobile i {
        float: right;
        font-style: normal;
    }
    }
#cssmenu > ul > li:last-child {
    border-right: 0 none;
    -moz-box-shadow: 0 0 0 transparent;
    -webkit-box-shadow: 0 0 0 transparent;
    box-shadow: 0 0 0 transparent;
    -webkit-border-radius: 0 4px 4px 0;
    -moz-border-radius: 0 4px 4px 0;
    border-radius: 0 4px 4px 0;
    }
#cssmenu > ul > li:last-child ul {
    left: auto;
    right: 0;
    }
#cssmenu > ul > li.mobile {
    border-right: 0 none;
    -moz-box-shadow: 0 0 0 transparent;
    -webkit-box-shadow: 0 0 0 transparent;
    box-shadow: 0 0 0 transparent;
    }
#cssmenu > ul > li > a {
    margin: 0 0 2px 0;
    font-size: 12px;
    display: block;
    color: #ffffff;
    text-shadow: 0 1px 1px #000;
    }
#cssmenu > ul > li > a > span {
    display: block;
    padding: 6px 10px;
    font-weight: bold;
    }
#cssmenu > ul > li > a:hover {
    text-decoration: none;
    }
#cssmenu > ul > li.active {
    border-bottom: none;
    }
#cssmenu > ul > li.active > a {
    color: #fff;
    text-shadow: 0 1px 1px #000;
    }
/* Sub menu */
#cssmenu ul ul {
    background: #f9f9f9;
    border: 1px solid #cccccc;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    -moz-box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.25);
    -webkit-box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.25);
    box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.25);
    padding: 5px 12px;
    display: none;
    position: absolute;
    top: 33px;
    left: 0;
    width: 200px;
    z-index: 1;
    }
@media all and (max-width: 480px) {
    #cssmenu ul ul {
        position: relative;
        top: 0;
        width: 100%;
    }
    }
#cssmenu ul ul li {
    padding: 3px 0;
    }
#cssmenu ul ul a {
    color: #999999;
    display: block;
    font-size: 12px;
    font-weight: bold;
    }
#cssmenu ul ul a:hover {
    color: #444444;
    }

Answer 1

这是Rails Turbolinks的问题。 应该改为使用：

$(document).on('ready page:load', function() {
  // Your implementation here ...
});