Layer loop stops short?

[subieguy2]

#target illustrator
var doc = app.activeDocument;
var allLayers = doc.layers;
for (var i = 0; i < allLayers.length; i++) {
    allLayers.locked = false;
    if (allLayers.name == "Hypertext" || allLayers.name == "Taps") {
        alert("I found the " + allLayers.name + " layer")
    } else {
        //alert("Not the right layer")
        allLayers.remove();
    }
}

Can anyone tell me why my loop is stopping short?

I am trying to delete ALL of the layers in the active document that are NOT named Hypertext or Taps.

There are 28 layers in my document (including the 2 specific layers I want to keep).

After I run the script that I wrote (see above script) it does in fact keep my two desired layers but it also doesn't delete all the other layers. I am left with 12 layers that need to be deleted still.

Anyone see what I am doing wrong?

Windows 7 64bit, CS4, JavaScript

[Larry G. Schneider · Accepted solution]

Run the loop in reverse.

(var i = allLayers.length-1; i =>0; i--)

[subieguy2]

Thanks Larry! That worked out perfect. One small edit to your code was I had to change

(var i = allLayers.length-1; i => 0; i--)

to

(var i = allLayers.length-1; i >= 0; i--)

Final code....

#target illustrator
var doc = app.activeDocument;
var allLayers = doc.layers;
for (var i = allLayers.length-1; i>=0; i--){
    allLayers.locked = false;
    if (allLayers.name == "Hypertext" || allLayers.name == "Taps") {
        //alert("I found the " + allLayers.name + " layer")
    } else {
        //alert("Not the right layer")
        allLayers.remove();
    }
}

Thanks again Larry!