weird characters

[AhmedRyad22]

sir please can you help with this issue
so when i try my scanner in ur demo page it works perfectly
but when i try it in my browser i get wierd characters
in your demo i got : Code: 6130760003769 Quantity: 1
in my browser i got : Scanned: 1x -&"àè-ààà"è-ç

my code below
`$(document).ready(function (){

onScan.attachTo(document, {
    suffixKeyCodes: [13],
    reactToPaste: true,
    timeBeforeScanTest : 100,
    avgTimeByChar : 30,
    minLength : 6,
    suffixKeyCodes : [9,13],
    scanButtonLongPressTime : 500,
    singleScanQty : 1,
    onScan: function(sCode, iQty) {
        console.log('Scanned: ' + iQty + 'x ' + sCode); 
    }

});

})
`