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Javascript and barcode

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I have a form one input. If you set it up with onchange="somejavascript...."
and you type into the input field it does the javascript. If you scan a barcode
into the input box it doesn't trigger the javascript. onkeydown onkeypress or onkeyup will trigger it, but they are incorrect because they fire before the data
gets in and the javascript thinks there's no data. I tried a setTimeout where it would wait 50 usec before it fired the javascript, in the hope that that would give the data a chance to get as the value. but that didn't get it either. I also tried an input all by itself outside of form because I really don't want to submit this to server the old fashion way. my javascript is ajax actually so I get some asynchronous serverside action. I cant believe no one has a barcode reader trigger script for javascript.
Oct 25 '06 #1
1 3107
acoder
16,027 Recognized Expert Moderator MVP
You could use setInterval to call a function to check the input element at regular intervals. If it's different, fire the onchange function.
May 25 '08 #2

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