How to read multiple .pdf files in a loop for batch processing

Hi,

I'm trying to create a loop that effectively goes through a folder containing multiple pdf documents. This script is essentially meant to open and extract specific data from each pdf and export it to a single .txt file. The data export script has already been written, but I am having issues with setting up my loop to work through the folder.

This is the general layout of the loop I am currently working with:

while (***FOLDER HAS NEXT FILE***)

{

     var thisFile = ***SAVE FILE NAME AS STRING VARIABLE***

     app.openDoc(thisFile);

     (insert data extraction and export script)

}

If this initial approach is ineffective, or if there is a more efficient alternative, please share! Thank you!