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Re: Hello all I am new to json so I have a few questions

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  • Don Owens
    Yes, via the parseJSON method called on a string (see http://www.json.org/json.js). Don t use eval() unless the JSON is from a trusted source, i.e., you know
    Message 1 of 15 , Jun 28, 2007
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      Yes, via the parseJSON method called on a string (see
      http://www.json.org/json.js). Don't use eval() unless the JSON is
      from a trusted source, i.e., you know there are no function calls in
      there.


      --- In json@yahoogroups.com, "timgerr" <tim.gallagher@...> wrote:
      >
      > --- In json@yahoogroups.com, "marcrbraincast" <marcrbraincast@>
      > wrote:
      > >
      > > --- In json@yahoogroups.com, "timgerr" <tim.gallagher@> wrote:
      > > >
      > > <cut>
      > > > >
      > > > > The page reads:
      > > > >
      > > > > Dependencies
      > > > > JSONError.js
      > > > >
      > > > > I guess you need that file included too...
      > > > >
      > > >
      > > >
      > > > Thank you for the information, I guess that I need to read
      > better.
      > > > Here is the biggest question that I have, lets say I have a
      > string
      > > >
      > > > var test = {"outPut":[{"name":"Michelle Gallagher"},{"name":"Bob
      > > > Jones"},{"name":"tester"},{"name":"Administrator"}]};
      > > >
      > > > Can I decode this back into an object?
      > > >
      > > > Thanks again for the help,
      > > > -T
      > > >
      > >
      > > the var test is already an object.
      > > It's an object with one array which holds 4 objects.
      > >
      > > var str = "{'output':['name':'Michelle']}";
      > > would make a string...
      > >
      >
      >
      > I am new to some of this so I might not be clear, I am woking with
      > ajax and I am getting a string returned from another webpage that is
      > JSON encoded. When I recieve it it is then consittered a string. I
      > would like to take this returned string
      > {"outPut":[{"name":"Michelle Gallagher"},{"name":"Bob Jones"},
      > {"name":"tester"},{"name":"Administrator"}]}
      > and put it back into a javascript object. Can I do that with decode?
      >
      > Thanks for the help,
      > -T
      >
    • Mark Ireland
      Somewhat smaller? I was thinking a large object would be shrunk by half because there would be no repetition of the columnnames everywhere. . ... And I thought
      Message 2 of 15 , Jun 28, 2007
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        Somewhat smaller? I was thinking a large object would be shrunk by half
        because there would be no repetition of the columnnames everywhere. . ...

        And I thought my idea would make getting a value as easy as

        myJSON["js63009"].Company

        I suppose the list of columnnames could be an array since people would
        propbably make it into one so they can loop over it?

        >Then it would probably become something like this:
        >
        >{"totalItems":40,"itemsFound":2,"UNIQUEIDS":["js63013","js63009"],"columnnames":["Company","Title","Name","Phone","Email"],"items":{"js63013":["A1
        >Services","CEO","Jane Jones","800-555-2121","janejones@a1service
        >s.com"],"js63009":[" Acme","President","John
        >Smith","800-555-1212","johnsmith@acme. com"]}}
        >
        >But although that probably results in a somewhat smaller json string I
        >don't really see a benefit, in fact, the object looks a lot more
        >difficult to get the value's form.
        >
        >

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      • marcrbraincast
        Okay, fair enough... it will get smaller... You could indeed loose the list of columns and even the UNIQUEIDS and the totalItems... Not sure what the
        Message 3 of 15 , Jun 29, 2007
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          Okay, fair enough... it will get smaller...
          You could indeed loose the list of columns and even the UNIQUEIDS and
          the totalItems...

          Not sure what the itemsFound does...


          var j = {"itemsFound":2,
          "items":[
          {"js63013":["A1 Services","CEO","Jane
          Jones","800-555-2121","janejones@..."]},
          {"js63009":[" Acme","President","John
          Smith","800-555-1212","johnsmith@acme. com"]}
          ]
          };
          window.onload = function(){
          var txt = "";
          var col = j.items;
          var totalitems = j.items.length;
          for (var i=0;i<totalitems;i++){
          for (j in col[i]){
          txt += col[i][j] + " \n";
          }

          }
          alert(totalitems + "\n" + txt);
          }







          --- In json@yahoogroups.com, "Mark Ireland" <markincuba@...> wrote:
          >
          >
          > Somewhat smaller? I was thinking a large object would be shrunk by half
          > because there would be no repetition of the columnnames everywhere.
          . ...
          >
          > And I thought my idea would make getting a value as easy as
          >
          > myJSON["js63009"].Company
          >
          > I suppose the list of columnnames could be an array since people would
          > propbably make it into one so they can loop over it?
          >
          > >Then it would probably become something like this:
          > >
          >
          >{"totalItems":40,"itemsFound":2,"UNIQUEIDS":["js63013","js63009"],"columnnames":["Company","Title","Name","Phone","Email"],"items":{"js63013":["A1
          > >Services","CEO","Jane Jones","800-555-2121","janejones@a1service
          > >s.com"],"js63009":[" Acme","President","John
          > >Smith","800-555-1212","johnsmith@acme. com"]}}
          > >
          > >But although that probably results in a somewhat smaller json string I
          > >don't really see a benefit, in fact, the object looks a lot more
          > >difficult to get the value's form.
          > >
          > >
          >
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