ExecJS::RuntimeUnavailable in Rails 4.1.4

UPDATE:一切正常!

由于深度，我安装node.js然后得到TZInfo::DataSourceNotFound错误，通过添加gem 'tzinfo-data', platforms: [:mingw, :mswin]和bundle update得到解决。

谢谢你!

首先，我是一个完全的rails初学者(只是为了让你知道我是多么的初学者:我觉得自己只是在这里发布的专家)，这是我在这里的第一个问题，所以如果我不是很清楚，请原谅我。

所以，我是一个windows 7用户，学习rails与一个月的课程，我遇到了一个错误，而试图:

$ rake routes
rake aborted!
ExecJS::RuntimeUnavailable: Could not find a JavaScript runtime. See https://git
hub.com/sstephenson/execjs for a list of available runtimes.
c:/Users/Marc Montagne/Desktop/pinteresting/config/application.rb:7:in `<top (re
quired)>'
c:/Users/Marc Montagne/Desktop/pinteresting/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)

或

$ rails server
c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/execjs-2.0.2/lib/execjs/run
times.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://gi
thub.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUn
available)
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/execjs-2.0.2/l
ib/execjs.rb:5:in `<module:ExecJS>'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/execjs-2.0.2/l
ib/execjs.rb:4:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/uglifier-2.4.0
/lib/uglifier.rb:3:in `require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/uglifier-2.4.0
/lib/uglifier.rb:3:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:72:in `require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:72:in `block (2 levels) in require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:70:in `each'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:70:in `block in require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:59:in `each'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler/runtime.rb:59:in `require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/
lib/bundler.rb:132:in `require'
        from c:/Users/Marc Montagne/Desktop/pinteresting/config/application.rb:7
:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands/commands_tasks.rb:79:in `require'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands/commands_tasks.rb:79:in `block in server'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands/commands_tasks.rb:76:in `tap'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands/commands_tasks.rb:76:in `server'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
        from c:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.1.4
/lib/rails/commands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

我所理解的是，我有一个问题与ExecJS。作为一个初学者，我甚至不知道ExecJS是什么。

我读了伟大的线程#12520456，而编辑运行时。rb没有解决我的问题，它仍然给了我一个更好的了解情况和愿意解决我的问题，通过修复它，而不是"忽略它"通过添加node.js，特别是考虑到我可以运行我的服务器之前，我想修复我基本上打破了。

我的意思是，我认为我在编辑我的Windows环境的PATH(我甚至不知道这是什么)时做错了什么，以修复我在安装Heroku时遇到的问题。我记得当我在某处阅读时编辑了这一部分，虽然它似乎解决了我的Heroku问题，但我认为它把其他部分搞砸了。

提前感谢您的帮助和理解