Rails 中的 JQuery 在从另一个页面链接后失败，但在页面加载时工作

我在主页上使用了一个报价旋转器。当我直接从浏览器加载页面（在浏览器中输入地址并按回车键）时，它工作正常。但是，如果我单击指向我网站中另一个页面的链接，然后链接回主页，它就会停止工作。更具体地说，引号开始重叠，几乎就像该方法的两个实例正在运行一样。

我认为这可能是 javascript 加载方式的问题。由于我在网站的另一个页面上有一个选项卡脚本，它可以正常加载，但如果我链接离开并返回到该页面，它就不再起作用了......

在控制台中没有收到任何错误。

我在 Ubuntu 12 上运行 Rails 4、Ruby 2.0.0、Foundation，并使用 WebBrick 进行测试。 Gemfile 发布如下：

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0'

# Use mysql as the database for Active Record
gem 'mysql2'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0'


# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
#gem 'nokogiri' '~> 1.5.10'
# Use jquery as the JavaScript library
gem 'jquery-rails'

gem 'activerecord-session_store', github: 'rails/activerecord-session_store'

gem 'activemerchant'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'

gem 'ransack'

gem 'xml-simple'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.2'

gem 'zurb-foundation'

group :doc do
  # bundle exec rake doc:rails generates the API under doc/api.
  gem 'sdoc', require: false
end

# Use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
 gem 'capistrano', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

Script:

    function rotateQuotes() {
            var oCurQuote = $('#quotes div.current');
            var oNxtQuote = oCurQuote.next();
            if (oNxtQuote.length == 0)
                oNxtQuote = $('#quotes div:first');

            oCurQuote.removeClass('current').addClass('previous');
            oNxtQuote.css({ opacity: 0.0 }).addClass('current').animate({ opacity: 1.0 }, {duration: 4500},
                function() {
                    oCurQuote.removeClass('previous');});
                    oCurQuote.animate({opacity: 0.0}, {duration: 500});

    }; 

$(function(){

                setInterval(rotateQuotes, 5000);
            });

应用程序.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
// compiled file.
//
// Read Sprockets README (https://github.com/sstephenson/sprockets#sprockets-directives) for details
// about supported directives.
//
//
//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require_tree .

我猜这与 Turbolinks 相关。来自精美手册:

Events

使用 Turbolinks，页面无需完全重新加载即可更改，因此您不能依赖DOMContentLoaded or jQuery.ready()触发您的代码。相反，Turbolinks 会触发事件document提供页面生命周期的挂钩。

AFAIK，Rails4 默认启用 Turbolinks（并且你的application.js) so $(function() { ... })更改页面时不会总是触发。你可以尝试绑定到turbolinks:load反而：

$(document).on('turbolinks:load', function() {
    setInterval(rotateQuotes, 5000);
});

您可能想要绑定到turbolinks:before-visit也清理东西。

或者，如果您不关心的话，可以禁用 Turbolinks。