Javascript can'；不要在购物车上删除商品

我需要通过按清除按钮删除所有添加到购物车的项目。 我开始写一个函数，但它不起作用。 我认为错误是我没有把东西推到手推车上。 我如何做这两件事？无论如何，如果你看到任何错误，请提出来

angular.module('TransactionApp', [])
    .controller('TransactionsCtrl', function($scope) {
        $scope.title = 'Add to cart';

        $scope.itemsArray = [{
                price: 50,
                name: "Whey protein",
                img: 'img/item-1.png',
                quantity: 0
            },
            {
                price: 60,
                name: "Protein bar",
                img: 'img/item-1.png',
                quantity: 0
            },
            {
                price: 35,
                name: "BCAA",
                img: 'img/item-1.png',
                quantity: 0
            },
            {
                price: 50,
                name: "Whey protein",
                img: 'img/item-1.png',
                quantity: 0
            },
            {
                price: 60,
                name: "Protein bar",
                img: 'img/item-1.png',
                quantity: 0
            },
            {
                price: 80,
                name: "BCAA",
                img: 'img/item-1.png',
                quantity: 0
            }

        ];

        $scope.addTo = function(item) {
            item.quantity += 1;
        }

        $scope.getCost = function(item) {
            return item.quantity * item.price;

        }

        $scope.cart = [];

        $scope.getTotal = function() {
            return $scope.itemsArray.reduce((a, b) => a + b.price * b.quantity, 0);
        }

        $scope.clearCart = function() {
            return $scope.cart.length = 0;
        };
    });

---

Juse重置阵列中的项目

   $scope.cart = [];

---

您不需要返回任何内容，您可以使用长度获得计数。

只要重置数组中的项目

   $scope.cart = [];

---

您不需要返回任何内容，您可以使用length获得计数。

要使其为空，请使用以下命令：

$scope.cart = [];

或逐一减少：

$scope.cart.slice(start, end);//start is an index from where you want to delete and the end is number which represents how many to delete.

要在最后一个索引处在数组中插入内容，您确实需要推送：

$scope.cart.push(item);

---

要使其为空，请使用以下命令：

$scope.cart = [];

或逐一减少：

$scope.cart.slice(start, end);//start is an index from where you want to delete and the end is number which represents how many to delete.

要在最后一个索引处在数组中插入内容，您确实需要推送：

$scope.cart.push(item);

应该是

$scope.clearCart = function() {
  $scope.cart = [];
};

应该是

$scope.clearCart = function() {
  $scope.cart = [];
};