RE: [Dynapi-Help] (no subject)

[Matthew A. S. <ms...@go...>]

To avoid using loop searches like this I have used the idea of lookup tables
to help with locating something that I am looking for.  I would have
basically two arrays:

lookup["a"] = 0
lookup["b"] = 1
lookup["c"] = 2

objectA.name = "a";
object[0] = objectA;
objectB.name = "b";
object[1] = objectB;
objectC.name = "c";
object[2] = objectC;

so if I wand to find objectB I look for it by a given name.  I just use "b"
here.

to get objectB's index I just return:
    i = lookup["b"];

if I actually just want the object then I do:

     o = object[lookup["b"]];

I also store the name with the object itself so that it can internally
determine it's position if needed.

I am not certain that I have explained this well.  I am also not certain
this is more efficient than looping through the array.  For all I know
that's what JS does when you use arrays with named indexes...  But this
seems to work really well for me.  Any input would be appreciated though.

M.

  -----Original Message-----
  From: dyn...@li...
[mailto:dyn...@li...]On Behalf Of Doug Melvin
  Sent: Monday, March 12, 2001 4:57 PM
  To: dynapi-help
  Subject: [Dynapi-Help] (no subject)


  is there a better way to determine an objects position in an array other
than the below code?

   for (var i=0;i < tempNode.parentNode.nodes.length;i++){
    if (tempNode.parentNode.nodes[i]===tempNode){
     index=i;
     i=tempNode.parentNode.nodes.length;
    };
   };


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