ASCII control character html input text

Question

I\'m trying to process input from a barcode scanner in a javascript browser app. The scanner output is a string of characters, which also contains at least one Group Separator c

Answer 1

I had the same problem and based on the idea with the event listener I build custom solutions for IE/Chrome and Firefox:

IE + Chrome (Raidox solution):

document.getElementById('scanfield').addEventListener('keypress', function(e) {
    if (e.which === 29) {
        this.value += String.fromCharCode(e.which);
    }
});

Firefox:

var altValue = '';
document.getElementById('scanfield').addEventListener('keypress', function(e) {
    if(e.altKey){
        altValue += String.fromCharCode(e.which)
        if(altValue == '0029'){
            this.value += String.fromCharCode(29);
            altValue='';
        }
    }
});

Edge works out of the box.