全新快递项目doctype 5`上的错误已被弃用,您现在必须使用`doctype html`

Question

通过在Windows命令提示符下运行以下命令来创建一个全新的express.js项目

npm install express -g 
express newproject
cd newproject
npm install
node app

然后我打开浏览器窗口http://localhost:3000/并获得以下错误

    500 Error: c:\projects\newproject\views\index.jade:5<br/> 3| block content <br/> 4| h1= title <br/> > 5| p Welcome to #{title}<br/><br/>`doctype 5` is deprecated, you must now use `doctype html`
3| block content 
4| h1= title 
> 5| p Welcome to #{title}

`doctype 5` is deprecated, you must now use `doctype html`
at Object.Compiler.setDoctype (c:\projects\newproject\node_modules\jade\lib\compiler.js:68:13)
at Object.Compiler.visitDoctype (c:\projects\newproject\node_modules\jade\lib\compiler.js:312:12)
at Object.Compiler.visitNode (c:\projects\newproject\node_modules\jade\lib\compiler.js:210:37)
at Object.Compiler.visit (c:\projects\newproject\node_modules\jade\lib\compiler.js:197:10)
at Object.Compiler.visitBlock (c:\projects\newproject\node_modules\jade\lib\compiler.js:278:12)
at Object.Compiler.visitNode (c:\projects\newproject\node_modules\jade\lib\compiler.js:210:37)
at Object.Compiler.visit (c:\projects\newproject\node_modules\jade\lib\compiler.js:197:10)
at Object.Compiler.compile (c:\projects\newproject\node_modules\jade\lib\compiler.js:52:10)
at parse (c:\projects\newproject\node_modules\jade\lib\jade.js:96:23)
at Object.exports.compile (c:\projects\newproject\node_modules\jade\lib\jade.js:152:9)

Answer 1

要修复当前项目以及使用当前版本的Express构建的任何项目,请转到layout.jade文件并将第一行更改为:doctype html(第二行应为:html)

问题已知且已经解决,因此在将来的Express版本中不会出现问题. https://github.com/visionmedia/express/pull/1875

Answer 2

使用 :

doctype html
html(lang ="en")