Ok if you have two arrays, compare the items in a loop. If it matches,
add it to a third array. Continue until all elements of array two have
been compared to all values in array one. The third array becomes the
items selected array
// array index for finalArray
var z=0;
// origArray is items previously selected
origArray = new Array();
origArray[0]="1";
origArray[1]="2";
origArray[2]="3";
// selectedArray is items newly selected
selectedArray = new Array();
selectedArray[0]="3";
selectedArray[1]="4";
// finalArray is to determine what has been selected
finalArray = new Array();
// loop through arrays to see what they have in common
for (var i=0; i<origArray.length; i++){
for (var j=0; j<selectedArray.length; j++){
// if they match, add them to the final array
if (selectedArray[j] == origArray[i])
{
finalArray[z] = selectedArray[j];
// splice function will remove it from its array
selectedArray.splice(j, 1);
// increment index to move to next array element if
necessary
z++;}
}}
// all matching entries have now been removed and we're left with
new adds
for (var j=0; j<selectedArray.length; j++){
// add them to the finalArray
finalArray[z] = selectedArray[j];
z++;
}
for (var y=0; y<finalArray.length; y++){
// debug to show what we've found!
alert ("Found it! " + finalArray[y]);
}
Some monkeying around should get you where you need to be!
HTH,
- Todd
-----Original Message-----
From: Howard Cheng [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 09, 2004 10:09 AM
To: [EMAIL PROTECTED]
Subject: [wdvltalk] [Javascript] Getting index of selected item
However, consider the case where items 1, 2, and 3 are selected, then
the use clicks item 3 only. In this case, the previously selected array
has 3 items and the newly selected array has 1, but that one value is in
the other array, so I can't actually tell that it's been selected.
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