更新：现在一切正常！
感谢deep，我安装了 node.js 然后得到了一个 TZInfo::DataSourceNotFound 错误，通过添加gem 'tzinfo-data', platforms: [:mingw, :mswin]and得到了解决bundle update。
谢谢你，先生 ！
首先，我是一个完整的rails初学者（只是为了让你了解我是多么的初学者：我感觉自己是在这里发帖的专家），这是我在这里的第一个问题，所以如果我不是很好，请原谅我清除。
因此，我是 Windows 7 用户，正在通过一个月课程学习 rails，但在尝试以下操作时遇到错误：
$ 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)
或者
$ 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>'
我所了解的是我对 ExecJS 有问题。作为一个初学者，我什至不知道 ExecJS 是什么。
我阅读了很棒的线程#12520456并且在编辑 runtimes.rb 并没有解决我的问题时，它仍然让我更好地了解情况以及通过修复它而不是通过添加节点来“忽略它”来解决我的问题的意愿。 Node.js 特别是考虑到我之前可以运行我的服务器并且我想修复我基本上破坏的问题。
我的意思是我认为我在编辑 Windows 环境的 PATH（我什至不知道这是什么）以解决安装 Heroku 时遇到的问题时做错了。我记得我在某处读到它时编辑了那部分，虽然它似乎解决了我的 Heroku 问题，但我认为它搞砸了其余部分。
预先感谢您的帮助和理解。