Checking length of dictionary object

Question

I m trying to check the length here   Tried count   Is there something I m missing   var dNames        dNames   GetAllNames     for  var i   0  l   dName length  i  lt  l  i               alert  Name      dName i  name       dNames holds name value pairs   I know that dNames has values in that object but it s still completely skipping over that and when I alert out even dName length obviously that s not how to do this   so not sure   Looked it up on the web   Could not find anything on this

User · Answer

What I do is use Object keys   to return a list of all the keys and then get the length of that  Object keys dictionary  length

User · Answer

var c     a   A    b   B    c   C    var count   0  for  var i in c       if  c hasOwnProperty i   count       alert count

User · Answer

This question is confusing  A regular object     doesn t have a length property unless you re intending to make your own function constructor which generates custom objects which do have it   in which case you didn t specify     Meaning  you have to get the  length  by a for  in statement on the object  since length is not set  and increment a counter   I m confused as to why you need the length  Are you manually setting 0 on the object  or are you relying on custom string keys  eg obj  foo      bar    If the latter  again  why the need for length   Edit  1  Why can t you just do this   list      name  john     name  bob        Then iterate over list  The length is already set

User · Answer

Count and show keys in a dictionary  run in console    o    count 0  for  i in topicNames      count  o push count       i    o join   n     Sample output    1  Phase-out Left-hand 2  Define All Top Level Taxonomies But Processes 3  987 4  16 00 5  Identify suppliers    Simple count function    function size dict d  c 0  for  i in d    c  return c

[javascript] Checking length of dictionary object

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