hash keys values as array

Question

I cannot find the javascript equivalent of php array keys     array values    For people unfamiliar with php given the following js hash   var myHash     apples   3   oranges   4   bananas   42    How can I get an array of keys  i e     apples    oranges    bananas     Same question with the values  i e    3  4  42    jQuery can be used

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The second answer  at the time of writing  gives    var values   keys map function v    return myHash v         But I prefer using jQuery s own   map     var values     map myHash  function v    return v        Since jQuery takes care of cross-browser compatibility  Plus it s shorter     At any rate  I always try to be as functional as possible  One-liners are nicers than loops

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look at the   keys   and   values   functions in either lodash or underscore   underscore   keys underscore   values lodash   keys   lodash   values

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var myHash     apples   3   oranges   4   bananas   42  vals  function e  a    for  var i in e  a push e i    return a    myHash  join      keys  function e  a    for  var i in e  a push   i    return a    myHash  join      console log vals keys    basically  array  function e  a    for  var i in e  a push e i    return a    HASHHERE

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In ES5 supported  or shimmed  browsers     var keys   Object keys myHash    var values   keys map function v    return myHash v           Shims from MDN      Object keys Array prototype map

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Don t know if it helps  but the  foreach  goes through all the keys  for  var key in obj1

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var a     apples   3   oranges   4   bananas   42        var array keys   new Array    var array values   new Array     for  var key in a        array keys push key       array values push a key       alert array keys   alert array values

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Here are implementations from phpjs org    array values array keys   This is not my code  I m just pointing you to a useful resource

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function getKeys obj       var keys           for  key in obj            if  obj hasOwnProperty key     keys keys length    key               return keys

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Here is a good example of array keys from PHP js library   function array keys  input  search value  argStrict           Return just the keys from the input array  optionally only for the specified search value      var search   typeof search value      undefined           tmp arr               strict     argStrict          include   true          key            for  key in input            if  input hasOwnProperty key                 include   true              if  search                    if  strict  amp  amp  input key      search value                        include   false                                    else if  input key     search value                        include   false                                               if  include                    tmp arr tmp arr length    key                                     return tmp arr      The same goes for array values  from the same PHP js library    function array values  input           Return just the values from the input array        var tmp arr               key            for  key in input            tmp arr tmp arr length    input key              return tmp arr      EDIT  Removed unnecessary clauses from the code

[javascript] hash keys / values as array

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