JScript  

Enumerator Object

Enables enumeration of items in a collection.

enumObj = new Enumerator([collection]) 

Arguments

enumObj
Required. The variable name to which the Enumerator object is assigned.
collection
Optional. Any Collection object.

Remarks

Collections differ from arrays in that the members of a collection are not directly accessible. Instead of using indexes, as you would with arrays, you can only move the current item pointer to the first or next element of a collection.

The Enumerator object provides a way to access any member of a collection and behaves similarly to the For...Each statement in VBScript.

Example

The following code shows the usage of the Enumerator object:

function ShowDriveList(){
   var fso, s, n, e, x;                     //Declare variables.
   fso = new ActiveXObject("Scripting.FileSystemObject");
   e = new Enumerator(fso.Drives);          //Create Enumerator on Drives.
   s = "";
   for (;!e.atEnd();e.moveNext())           //Enumerate drives collection.
      {
         x = e.item();
         s = s + x.DriveLetter;
         s += " - ";
         if (x.DriveType == 3)              //See if network drive.
            n = x.ShareName;                //Get share name
         else if (x.IsReady)                //See if drive is ready.
            n = x.VolumeName;               //Get volume name.
         else
            n = "[Drive not ready]";
         s +=  n + "<br>";
      }
   return(s);                               //Return active drive list.
}

Properties

The Enumerator object has no properties.

Methods

atEnd Method | item Method | moveFirst Method | moveNext Method

Requirements

Version 3