Shopify free shipping motivator

ajax-cart.js

function calculateShipping(cart) {
  // if total is more than > 50, we have a free shipping
  // change me to some number
  var FreeShippingPrice = 50;
  $(".cart-info").remove();
  if (!cart) {
    return;
  }

  var showText = function (text) {
    var info = "<div class='cart-info announcement'><p class='announcement__text'>" + text + " </p></div>";
    $(".cart-info").remove();
    $(".ajaxcart__button").prepend(info);
  }

  if (cart.total_price > 0) {
    var total = cart.total_price / 100;
    var until = FreeShippingPrice - total;
    if (until <= 0) {
      var message = "Good news! Your entire order is eligible for free shipping";
      showText(message)
      return;
    }

    var message = "Almost there! You're only $" + until + " away from free shipping";
    showText(message);
    return;
  }

}