barcodeGen

function barCodeGen(input) {
    let startNum = input[0];
    let endNum = input[1];
    let endNumString = endNum + "";


    for (let i = startNum; i <= endNum; i++) {
        let startNumString = i + "";
        for (let x = 0; x < 4; x++) {
            for (let y = 0; y < 4; y++) {
                console.log(startNumString[x]);
                console.log(endNumString[y]);
            }
        }
    }
}
//console.log(newBuffer)

barCodeGen(["1234",
    "1243"])