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Javascript 如何检测调用递归函数的位置_Javascript_Jquery_Recursion - Fatal编程技术网

Javascript 如何检测调用递归函数的位置

Javascript 如何检测调用递归函数的位置,javascript,jquery,recursion,Javascript,Jquery,Recursion,在尝试为我的eshop实现购物车时,我注意到initCartId和refreshCart被递归调用,导致项目崩溃 问题与相同,但这不能帮助我确定在哪里使用递归 当我转到购物车页面时,controller.js发出的警报如下: initCartId!!! refreshCart!!! calGrandTotal!!! calGrandTotal!!! calGrandTotal!!! calGrandTotal函数的前两个警报如下所示: 此时,我可以在控制台上看到StackOverflower

在尝试为我的eshop实现购物车时,我注意到initCartId和refreshCart被递归调用,导致项目崩溃

问题与相同,但这不能帮助我确定在哪里使用递归

当我转到购物车页面时,controller.js发出的警报如下:

initCartId!!!
refreshCart!!!
calGrandTotal!!!
calGrandTotal!!!
calGrandTotal!!!
calGrandTotal函数的前两个警报如下所示:

此时,我可以在控制台上看到StackOverflower错误,但警报会按照以下顺序再次出现:

initCartId!!!
refreshCart!!!
calGrandTotal!!!
cart.jsp

<%@taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@include file="/WEB-INF/views/template/header.jsp"%>


<div class="container-wrapper">
    <div class="container">
        <section>
            <div class="jumbotron">
                <div class="container">
                    <h1>Cart</h1>

                    <p>All the selected products in your shopping cart</p>
                </div>
            </div>
        </section>

        <section class="container" ng-app="cartApp">
            <div ng-controller="cartCtrl" ng-init="initCartId('${cartId}')">
                <div>
                    <a class="btn btn-danger pull-left" ng-click="clearCart()"><span
                        class="glyphicon glyphicon-remove-sign"></span>Clear Cart</a>
                </div>

                <table class="table table-hover">
                    <tr>
                        <th>Product</th>
                        <th>Unit Price</th>
                        <th>Quantity</th>
                        <th>Price</th>
                        <th>Action</th>
                    </tr>

                    <tr ng-repeat="item in cart.cartItems">
                        <td>{{item.product.productName}}</td>
                        <td>{{item.product.productPrice}}</td>
                        <td>{{item.quantity}}</td>
                        <td>{{item.totalPrice}}</td>
                        <td><a href="#" class="label label-danger"
                            ng-click="removeFromCart(item.product.productId)"> <span
                                class="glyphicon glyphicon-remove"></span>remove
                        </a></td>
                    </tr>
                    <!-- <tr>
                        <th></th>
                        <th></th>
                        <th>Grand Total</th>
                        <th>{{calGrandTotal()}}</th>
                        <th></th>
                    </tr> -->
                </table>

                <a href="<spring:url value="/productList" />"
                    class="btn btn-default">Continue Shopping</a>
            </div>
        </section>

    </div>
</div>

<script
    src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.1/angular.min.js"></script>
<script src="<c:url value="/resources/js/controller.js" /> "></script>


<%@include file="/WEB-INF/views/template/footer.jsp"%>

运货马车
您购物车中的所有选定产品

controller.js

var cartApp = angular.module ("cartApp", []);

cartApp.controller("cartCtrl", function ($scope, $http){

/* corresponding to the mapper at CartController with RequestMethod.GET */
/*
 * /eMusicStore/rest/cart/'+$scope.cartId) get the cart data in Json format
 * and with the success we use another function and the JSON format cart
 * info will be stored into data and we pass into $scope
 */
$scope.refreshCart = function (cartId) {
    alert("refreshCart!!!");
    $http.get('/eMusicStore/rest/cart/'+$scope.cartId).success(function (data) {
       $scope.cart=data;
    });
};


$scope.clearCart = function () {
    alert("clearCart!!!");
    /*$http.delete('/eMusicStore/rest/cart/'+$scope.cartId).success($scope.refreshCart($scope.cartId));*/        
    $http.delete('/eMusicStore/rest/cart/'+$scope.cartId).success(function (data) {
        $scope.refreshCart($scope.cartId);
    });
};      

$scope.initCartId = function (cartId) {
    alert("initCartId!!!");
    $scope.cartId = cartId;
   /* alert("cartId:" + cartId);*/
    $scope.refreshCart($scope.cartId);
};

$scope.addToCart = function (productId) {
    alert("addToCart!!!");
    $http.put('/eMusicStore/rest/cart/add/'+productId).success(function (data) {
        /*$scope.refreshCart($http.get('/eMusicStore/rest/cart/cartId'));*/
        alert("Product successfully added to the cart!");
    });
};

$scope.removeFromCart = function (productId) {
    alert("removeFromCart!!!");
    $http.put('/eMusicStore/rest/cart/remove/'+productId).success(function (data) {
        /*$scope.refreshCart($http.get('/eMusicStore/rest/cart/cartId'));*/
        $scope.refreshCart($scope.cartId);
    });
};

$scope.calGrandTotal = function () {
    alert("calGrandTotal!!!");
    var grandTotal=0;

    for (var i=0; i<$scope.cart.cartItems.length; i++) {
        grandTotal+=$scope.cart.cartItems[i].totalPrice;
    }

    return grandTotal;
};
});
var cartApp=angular.module(“cartApp”,[]);
控制器(“cartCtrl”,函数($scope,$http){
/*对应于CartController上带有RequestMethod.GET的映射程序*/
/*
*/eMusicStore/rest/cart/'+$scope.cartId)以Json格式获取购物车数据
*我们成功地使用了另一个函数和JSON格式的购物车
*信息将存储到数据中,我们将其传递到$scope中
*/
$scope.refreshCart=函数(cartId){
警报(“刷新购物车!!!”;
$http.get('/eMusicStore/rest/cart/'+$scope.cartId).success(函数(数据){
$scope.cart=数据;
});
};
$scope.clearCart=函数(){
警报(“clearCart!!!”;
/*$http.delete('/eMusicStore/rest/cart/'+$scope.cartId).success($scope.refreshCart($scope.cartId));*/
$http.delete('/eMusicStore/rest/cart/'+$scope.cartId).成功(函数(数据){
$scope.refreshCart($scope.cartId);
});
};      
$scope.initCartId=函数(cartId){
警报(“initCartId!!!”;
$scope.cartId=cartId;
/*警报(“cartId:+cartId”)*/
$scope.refreshCart($scope.cartId);
};
$scope.addToCart=函数(productId){
警报(“addToCart!!!”;
$http.put('/eMusicStore/rest/cart/add/'+productId).success(函数(数据){
/*$scope.refreshCart($http.get('/eMusicStore/rest/cart/cartId')*/
警报(“产品已成功添加到购物车!”);
});
};
$scope.removeFromCart=函数(productId){
警报(“removeFromCart!!!”;
$http.put('/eMusicStore/rest/cart/remove/'+productId).成功(函数(数据){
/*$scope.refreshCart($http.get('/eMusicStore/rest/cart/cartId')*/
$scope.refreshCart($scope.cartId);
});
};
$scope.calGrandTotal=函数(){
警报(“calGrandTotal!!!”;
var-grandTotal=0;

对于(var i=0;我在代码中看不到任何递归调用。这也是我的问题。你的意思是递归可能会在我的项目中的其他地方触发吗?我不知道
AngularJS
(你应该在标记中包含它)但是在你的
refreshCart
中,你说
$scope.cart=data;
这对我来说意味着我们有了一个新的购物车,所以
initCartId
应该再次运行?也许如果你把
$scope.cart=data;
改成
$scope.cart.cartims=data.cartims;
,这是个很好的主意,但不能解决我的问题。我不明白为什么函数initCartId被调用了2次..我试图删除所有的refreshCart函数,但是initCartId仍然被调用了2次..但是如何以及为什么?