问题
I configured the scanner to send Enter at the end of the input and js reads it correctly but the other characters are lost.
I have tried to decode the input characters with event.keyCode, event.which, event.charCode and nothing works. If I attach it to normal input it works. It also works in the browser address bar (chrome). But when I attach it to the document['onkeypress'] it doesn't read the characters.
I tried Martin Orth solution from here: https://developer.zebra.com/thread/35513 but I couldn't make it work I even don't know if it's the same scanner.
From here I understood that the scanner is sending ASCII characters and javascript has no mechanizm to read them? https://developer.zebra.com/thread/34536
If anyone knows the solution to this problem, help is highly appreciated. I prefer with js/jquery if it is possible at all.
来源：https://stackoverflow.com/questions/54768603/how-to-catch-input-on-documentkeypress-on-window-in-javascript-from-zebra-mc33