Rails Jquery不适用于其他页面

Question

I believe jQuery doesn't work on other pages than the one you just installed. For example, when I type localhost:3000/, in the '/' directory all jQuery works. But when I click to a link created by Rails as

<%= link_to "Example Link", news_path %>

The page correctly loads, but the jQuery doesn't work. My jQuery codes are as stated:

$(function() {
  console.log( "pageloaded" );
  ....
  $('.up').click(function(){
    .....
  });
});

Answer 1

In Rails 4 turbolinks is active by default.
That means, that $(document).ready() is not executed, when you load a new page.

turbolink fires a new event page:load . You can use this to run your javascript code:

$(document).on('page:load', your_start_function);

There is an excelent rails cast on turbolinks

Answer 2

https://github.com/kossnocorp/jquery.turbolinks

This gem binds jQuery.ready function with Turbolinks listen event page:load, therefore the solution is supposed to be solved if you are using Turbolinks with Rails 4

Answer 3

You need gem 'jquery-rails' in your Gemfile (then bundle install if you're using bundler)

Once that's done, you need to require it in your application.js file:

//= require jquery

Last, you need to ensure that the application.js file is loaded as part of the application template. In application.html.erb you should have the following:

<%= javascript_include_tag "application" %>

I believe that this is all there by default in a Rails install so if you have removed any of these settings you'll need to add them back to get it to work.