jQuery keypress() - get all chars until enter is pressed

Question

I'm trying to create a keypress/keyup function which reads from the document (not from an input field) - I'm gonna use it for a barcode scanning device.

function

    $(document).keyup(function(e) {
      var barcode = e.which;
      // the barcode should be without the enter at the end

      if (e.keyCode == 13){
         // stop reading 
      }
    });

I'm quite new to javascript and jQuery - as you probably already noticed.

Thanks for every help!

Update

This worked for me:

    $(function(){

            var barcode = '';

            var getCode = function (e) {
                if (e.which != 13) {
                    barcode += String.fromCharCode(e.which);
                } else {
                    $(document).unbind('keyup', getCode);
                    console.log(barcode);
                }
            };

            $(document).on('keypress', getCode);

            // Barcode ausgeben


            // Produktinfos ausgeben
            $('span#articleID').text('articleID');
            $('span#productName').text('productName');

        });

Thanks all!!

Answer 1

Create a function to bind on keyup. When enter is pressed, just unbind the function to make sure the code won't change anymore.

var barcode = '';

var getCode = function (e) {
    if (e.which != 13) {
        barcode += e.which;
    } else {
        $(document).unbind('keyup', getCode);
        console.log(barcode);
    }
};

$(document).on('keyup', getCode);