{
    "No address details found for record at row ": "undefined,3.,4.",
    "Invalid Street Number at row ": "undefined,5.",
    "Invalid Zip at row": "undefined,6.,7.,11."
}

{
    "No address details found for record at row ": "3,4",
    "Invalid Street Number at row ": "5",
    "Invalid Zip at row": "6,7,11"
}

var errorDisp = errorMsg.split(/^(.*)(d+)./gm);

if (a) object[aa[i - 1]] += "," + a;