Node js for each in not working

Question

I wanted to use for each     in with Node js  v0 4 11    I use it like this   var conf        index          path             first   index html            pattern   index  num  html                 template   index tpl         limit  8          feed          path   feed xml         template   atom tpl         limit  8         for each  var index in conf      console log index path       I get the following error           for each  var index in conf               node js 134         throw e     process nextTick error  or  error  event on first tick           SyntaxError  Unexpected identifier     at Module  compile  module js 397 25      at Object  js  module js 408 10      at Module load  module js 334 31      at Function  load  module js 293 12      at require  module js 346 19      at Object  lt anonymous gt    home paul dev indexing lib Index js 3 13      at Module  compile  module js 402 26      at Object  js  module js 408 10      at Module load  module js 334 31      at Function  load  module js 293 12    Where is the mistake  for each     in is supported since Javascript 1 6   See MDN for information about the usage of for each     in

User · Answer

for  var i in conf      val   conf i     console log val path

User · Answer

There s no for each in in the version of ECMAScript supported by Node js  only supported by firefox currently    The important thing to note is that JavaScript versions are only relevant to Gecko  Firefox s engine  and Rhino  which is always a few versions behind    Node uses V8 which follows ECMAScript specifications

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for those used to php     add this function function foreach arr  func     for var i in arr       func i  arr i            usage   foreach myArray  function i  v       run code here       similar to php version   foreach myArray as i  gt v       run code here

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https   github com cscott jsshaper implements a translator from JavaScript 1 8 to ECMAScript 5 1  which would allow you to use  for each  in code running on webkit or node

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Unfortunately node does not support for each     in  even though it is specified in JavaScript 1 6  Chrome uses the same JavaScript engine and is reported as having a similar shortcoming   You ll have to settle for array forEach function item       etc etc         EDIT  From Google s official V8 website      V8 implements ECMAScript as specified in ECMA-262    On the same MDN website where it says that for each    in is in JavaScript 1 6  it says that it is not in any ECMA version - hence  presumably  its absence from Node

User · Answer

This might be an old qustion  but just to keep things updated  there is a forEach method in javascript that works with NodeJS  Here s the link from the docs  And an example        count   countElements length          if  count  gt  0                countElements forEach function countElement                   console log countElement

[javascript] Node.js: for each … in not working

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