Jquery Ajax窗口位置Href查询

Question

遵循Django教程，其中一部分是创建一个Ajax请求来刷新/更新购物车。我被困在这个特定的界限上：

var currentPath = window.location.href
                if (currentPath.indexOf("carts") != -1) {
                  updateCart()

购物车指向什么，这是指向另一个HTML网页的链接还是引用了一个类？

下面的完整JS：

  $(document).ready(function(){
    var productForm = $(".form-product-ajax") // #form-product-ajax
    productForm.submit(function(event){
        event.preventDefault();
        // console.log("Form is not sending")
        var thisForm = $(this)
        //var actionEndpoint = thisForm.attr("action");
        var actionEndpoint = thisForm.attr("data-endpoint");
        var httpMethod = thisForm.attr("method");
        var formData = thisForm.serialize();
        $.ajax({
          url: actionEndpoint,
          method: httpMethod,
          data: formData,
          success: function(data){
            var submitSpan = thisForm.find(".submit-span")
            if (data.added){
              submitSpan.html("In cart <button type='submit' class='btn btn-link'>Remove?</button>")
            } else {
              submitSpan.html("<button type='submit'  class='btn btn-success'>Add to cart</button>")
             }
            var currentPath = window.location.href
            if (currentPath.indexOf("carts") != -1) {
              updateCart()
          }
        },
          error: function(errorData){
            console.log("error")
            console.log(errorData)
          }
        })
    })

      function updateCart(){
        console.log("in current cart")
        var cartTable = $(".cart-table")
        var cartBody = cartTable.find(".cart-body")
        cartBody.html("<h1></h1>")
    }