Thanks for the suggestion I too thought that but I don't have an idea about
how to proceed. can you help me
On Monday, July 23, 2012 10:41:34 AM UTC+5:30, blm wrote:
>
> On 7/22/12 8:43 PM, Prakash Ranganthan wrote:
> > Hi friends i tried blocking keyboard input but it also blocks barcode
> > input any idea how to proceed with blocking only keyboard input in
> > textbox and allowing barcode input.
> >
> > var barcode = document.getElementById('userid');
> > barcode.addEventListener("keypress", function() { alert("Please use
> > Barcode Scanner!"); document.getElementById('userid').value = "";},
> true);
>
> The barcode readers I've used just generate keystrokes, so as far as the
> browser's concerned, it's all keystrokes. However, the keystrokes from
> the reader usually come quickly and consistently, so maybe you could
> measure the time between keystrokes and differentiate that way.
>
> Of course whatever reader you're using may work differently.
>
> Brian
>
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