Looping through an array

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  • Jarle Kaste
    #1

    Looping through an array

    Take a look at this code:

    var arr = new Array();
    arr["id1"] = 1; // element 0
    arr["id5"] = 2; // element 1
    arr["id47"] = 3; // element 2

    Is it possible to loop through this array without knowing
    the string-id's? Just start out at element 0, and go on
    to 1 and 2 and print out the values?


    --
    Jarle Kaste
    jkaLOckEDste@on line.no ['Unlock' my address]


    Tags: None
    • Lasse Reichstein Nielsen
      #2
      Re: Looping through an array

      "Jarle Kaste" <jkaLOckEDste@o nline.no> writes:
      [color=blue]
      > Take a look at this code:
      >
      > var arr = new Array();
      > arr["id1"] = 1; // element 0
      > arr["id5"] = 2; // element 1
      > arr["id47"] = 3; // element 2
      >
      > Is it possible to loop through this array without knowing
      > the string-id's? Just start out at element 0, and go on
      > to 1 and 2 and print out the values?[/color]

      First of all, there is no need to use an array when you don't use
      integer indices. You might as well use an object, i.e.
      var arr = new Object();

      To iterate through the properties of any object, you can use the
      for(...in...) construct:
      for (var i in arr) {
      ... arr[i] ...
      }

      /L
      --
      Lasse Reichstein Nielsen - lrn@hotpop.com
      Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit. html>
      'Faith without judgement merely degrades the spirit divine.'

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        • kaeli
          #3
          Re: Looping through an array

          In article <8SyRa.13810$Hb .236051@news4.e .nsc.no>,
          jkaLOckEDste@on line.no enlightened us with...[color=blue]
          > Take a look at this code:
          >
          > var arr = new Array();
          > arr["id1"] = 1; // element 0
          > arr["id5"] = 2; // element 1
          > arr["id47"] = 3; // element 2
          >
          > Is it possible to loop through this array without knowing
          > the string-id's? Just start out at element 0, and go on
          > to 1 and 2 and print out the values?
          >
          >
          >[/color]
          <body>
          hi
          <script>
          var arr = new Array();
          arr["id1"] = 1; // element 0
          arr["id5"] = 2; // element 1
          arr["id47"] = 3; // element 2
          for (v in arr)
          alert(arr[v]);

          </script>

          --
          -------------------------------------------------
          ~kaeli~
          There is no justification or rationalization
          for mutilation. Ban declawing as inhumane.
          http://www.ipwebdesign.net/wildAtHeart

          http://www.ipwebdesign.net/kaelisSpace

          -------------------------------------------------

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