JS Input format currecy

addDecimal.js

function addCommas(nStr)
{
    nStr += '';
    x = nStr.split('.');
    x1 = x[0];
    x2 = x.length > 1 ? '.' + x[1] : '';
    var rgx = /(\d+)(\d{3})/;
    while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
    }
    return x1 + x2;
}

currency.js

$("input[data-type='currency']").on({
    keyup: function() {
        formatCurrency($(this));
    },
    blur: function() { 
        formatCurrency($(this), "blur");
    }
});


function formatNumber(n) {
    return n.replace(/\D/g, "").replace(/\B(?=(\d{3})+(?!\d))/g, ",")
}


function formatCurrency(input, blur) {
    var input_val = input.val();
    if (input_val === "") { return; }
    var original_len = input_val.length;
    var caret_pos = input.prop("selectionStart");
    if (input_val.indexOf(".") >= 0) {
        var decimal_pos = input_val.indexOf(".");
        var left_side = input_val.substring(0, decimal_pos);
        var right_side = input_val.substring(decimal_pos);
        left_side = formatNumber(left_side);
        right_side = formatNumber(right_side);
        if (blur === "blur") {
            right_side += "00";
        }
        right_side = right_side.substring(0, 2);
        input_val = "Rp" + left_side + "." + right_side;
    } else {
        input_val = formatNumber(input_val);
        input_val = "Rp" + input_val;
        if (blur === "blur") {
            input_val += ".00";
        }
    }
    input.val(input_val);
    var updated_len = input_val.length;
    caret_pos = updated_len - original_len + caret_pos;
    input[0].setSelectionRange(caret_pos, caret_pos);
}

numberWithCommas.js

function numberWithCommas(x) {
    return x.toString().replace(/\B(?<!\.\d*)(?=(\d{3})+(?!\d))/g, ",");
}