Iterate over values of object

Question

I want to iterate over all values of a map  I know it s possible to iterate over all keys  But is it possible to iterate directly over the values    var map     key1    value1   key2    value2     for  var key in map            iterates over keys

User · Answer

EcmaScript 2017 introduced Object entries that allows you to iterate over values and keys  Documentation  var map     key1    value1   key2    value2     for  let  key  value  of Object entries map         console log    key     value         The result will be      key1  value1   key2  value2

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In case you want to deeply iterate into a complex  nested  object for each key  amp  value  you can do so using Object keys     const iterate    obj    gt        Object keys obj  forEach key   gt         console log  key    key   value    obj key          if  typeof obj key       object                 iterate obj key

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You could use underscore js and the each function     each  key1   value1   key2   value2    function value      console log value

User · Answer

No  there s no direct method to do that with objects   The Map type does have a values   method that returns an iterator for the values

User · Answer

In the sense I think you intended  in ES5 or ES2015  no  not without some work on your part    In ES2016  probably with object values   Mind you Arrays in JavaScript are effectively a map from an integer to a value  and the values in JavaScript arrays can be enumerated directly     foo    bar   forEach v   gt  console log v       foo bar   Also  in ES2015  you can make an object iterable by placing a function on a property with the name of Symbol iterator   var obj          foo   1        bar   2       bam   3       bat   4       obj Symbol iterator    iter bind null  obj    function  iter o        var keys   Object keys o       for  var i 0  i lt keys length  i              yield o keys i             for var v of obj    console log v         1    2    3    4    Also  per other answers  there are other built-ins that provide the functionality you want  like Map  but not WeakMap because it is not iterable  and Set for example  but these are not present in all browsers yet

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It s not a map  It s simply an Object   Edit  below code is worse than OP s  as Amit pointed out in comments   You can  iterate over the values  by actually iterating over the keys with   var value  Object keys map  forEach function key        value   map key       console log value

User · Answer

I iterate like this and it works for me   for  let  k  v  of myMap        console log  Key      k       console log  Value      v       Hope this helps

[javascript] Iterate over values of object

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