引用错误:分配给未声明的变量petsprice-cal

我有一个功能来计算宠物的数量和每个价格。我出错了。

引用错误:分配给未声明的变量petsprice-cal

我的职能是:

window.petCheck = function() {
    if (jQuery("#edit-dropdown-pets").val() > 0) {
      localStorage.petBook = jQuery("#petcheckbox").prop("checked"), petsPrice_cal = m; //petsPrice_cal = jQuery("#edit-dropdown-pets").val() * m;
      var a = parseFloat(i) + parseFloat(petsPrice_cal);
      jQuery("#priceTotal").html(parseFloat(a).toFixed(2));
      var b = jQuery("#priceTotal").html();

    if (isNaN(b) || -1 == b.toString().indexOf(".")) b = b.replace(/\B(?=(\d{3})+(?!\d))/g, ",");
      else {
        var c = b.toString().split(".");
        c[0] = c[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",");
        var b = c.join(".")
      }
      b = b.replace(/\B(?=(\d{3})+(?!\d))/g, ","), jQuery("#priceTotal").html(b), l > 0 && (jQuery("#discountData").html("(Includes Discount of " + o + l + ")"), jQuery("#discountData").show())
    }