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steve1dance
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Creating and tracking counters in Acrobat

Jul 30, 2012 8:15 AM

Categories: Windows

I need to create a PDF document that is "aware" of how many times it has been opened.  What i want is the capability to send a document for evaluation but place a limit on how many times the document has been viewed, displaying a message to the user when the limit has been reached.  I found this code on another post and I just want to make sure that it will work (obviously the code does not include the message box).

 

Many thanks for your help

 

if (global.count = null)

{

global.count = 0

global.setPersistent("count",true)

}

else

global.count++

262 Views   1 Reply   Latest reply: George Johnson, Jul 30, 2012 10:03 AM
 
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  • George Johnson
    9,222 posts
    Aug 11, 2002
    Currently Being Moderated
    1. George Johnson,
    Jul 30, 2012 10:03 AM   in reply to steve1dance
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    That's not the right way to check for the existence of a global variable. If a global variable does not exist, it will return a value of undefined, not null. Also, the code has a bug such that it actually sets the global to null rather than testing to see if it's equal to null.

     

    Try something like this:

     

    if (typeof global.count === "undefined") {

        global.count = 0;

        global.setPersistent("count", true);

    } else {

        global.count++;

    }

     
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