C:\sites\srhapp>rails generate controller home index
C:/Ruby21/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/runtimes.rb:48:in `au
todetect': Could not find a JavaScript runtime. See https://github.com/rails/exe
cjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
C:\sites\srhapp>rails generate controller home
阅读背景：
无法在rails中找到javascript运行时，无法在windows上安装'therubyracer'gem
来源：互联网
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