javascript - ReferenceError: $ is not defined although jQuery was added in Layout.jade -

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i getting error when trying run basic javascript code in node.js

 referenceerror: $ not defined                                                                                                                                                                                                                @ object.<anonymous> (/home/ubuntu/workspace/nodetest2/public/javascripts/global.js:5:1)                                                                                                                                                   @ module._compile (module.js:409:26)                                                                                                                                                                                                       @ object.module._extensions..js (module.js:416:10)                                                                                                                                                                                         @ module.load (module.js:343:32)                                                                                                                                                                                                           @ function.module._load (module.js:300:12)                                                                                                                                                                                                 @ module.runmain [as _ontimeout] (module.js:441:10)                                                                                                                                                                                        @ timer.listontimeout (timers.js:92:15)

in layout.jade have added 

     script(src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js')      script(src='/public/javascripts/global.js')

thank help.


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