Javascript 使用react Rails gem的运行时错误Rails 4

启动本地服务器时出错

rails s

错误消息：

编译（（execjs）：6633:19）：语法错误：[stdin]：5:10:意外。（ExecJS:：RuntimeError）

我的

application.html.erb

中的6行突出显示：

true%>

Gemfile

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
gem 'bootstrap-sass', '~> 3.3.4'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

gem 'therubyracer', '0.12.1'
gem 'execjs'
gem 'node', '~> 0.0.2'
gem 'react-rails', '~> 1.0'
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

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

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

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'

  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
end

---

有人知道我为什么会收到此错误消息吗？

我发现了问题。。。CoffeeScript在间距方面非常细致。我需要以一个制表符间距启动函数，如下所示：

  @Records = React.createClass
    render: ->
      React.DOM.div
        className: 'records'
        React.DOM.h2
          className: 'title'
          'Records'

  @Records = React.createClass
    render: ->
      React.DOM.div
        className: 'records'
        React.DOM.h2
          className: 'title'
          'Records'