购物车管理

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>购物车</title>
    <link href="lib/css/ionic.min.css" rel="stylesheet" />
    <script src="lib/js/ionic.bundle.min.js"></script>
    <script>
        angular.module("myApp", ["ionic"])
            .controller("OneDeom", function($scope) {
                //遍历数组
                $scope.datas = [{
                        "id": 0,
                        "img": "img/head.jpg",
                        "title": "标题1",
                        "price": 100,
                        "num": 1,
                        "state": false
                    },
                    {
                        "id": 1,
                        "img": "img/head.jpg",
                        "title": "标题二",
                        "price": 200,
                        "num": 1,
                        "state": false
                    },
                    {
                        "id": 2,
                        "img": "img/head.jpg",
                        "title": "标题三",
                        "price": 300,
                        "num": 1,
                        "state": false
                    }
                ];
                //按+号
                $scope.more = function(good) {
                    good.num = good.num + 1;
                };
                //按-号
                $scope.less = function(good) {
                    //如果购物车的商品数量小于1
                    if(good.num <= 1) {
                        //循环数组
                        for(var i = 0; i < $scope.datas.length; i++) {
                            //数组里的某个id和购物车里商品的id相同
                            if($scope.datas[i].id == good.id) {
                                $scope.datas.splice(i, 1); //从购物车中把商品移除                
                            }
                        }
                    } else { //如果购物车的商品数量大于1
                        good.num = good.num - 1;
                    }
                };
                //计算总数量的函数, 提供返回值 
                $scope.count = function() {
                    var i = 0; //购物车数量总计
                    for(g in $scope.datas) { //遍历数组
                        if($scope.datas[g].state) { //每个商品状态选择状态
                            i = i + $scope.datas[g].num;
                        }

                    }
                    return i;
                }
                //计算总价方法,提供返回值
                $scope.sumPrice = function() {
                    var sum = 0; //总价
                    for(g in $scope.datas) {
                        if($scope.datas[g].state) {
                            sum = sum + ($scope.datas[g].price * $scope.datas[g].num);
                        }
                    }
                    return sum;
                }
                //直接 删除该商品
                $scope.del = function(good) {
                    for(var i = 0; i < $scope.datas.length; i++) {
                        if($scope.datas[i].id == good.id) {
                            $scope.datas.splice(i, 1); //从购物车中把商品移除                
                        }
                    }
                }

                //全部选中/全取消选中
                $scope.ckAll = function() {
                    var b = $scope.isck; //b:true 勾选  b:false:取消勾选
                    for(var i = 0; i < $scope.datas.length; i++) {
                        $scope.datas[i].state = b; //改变的选择状态
                    }
                }

            });
    </script>
</head>

<body ng-app="myApp" ng-controller="OneDeom">
    <div class="content">
        <ul class="list">
            <li class="item" ng-repeat="good in datas ">
                <input type="checkbox" ng-model="good.state" />
                <img src={{good.img}} />
                <h3>{{good.title}}</h3>
                <span>{{good.price}}</span>
                <button ng-click="less(good)">- </button> {{good.num}} <button ng-click="more(good)">+</button>
                <button ng-click="del(good)">删除 </button>
            </li>
        </ul>
    </div>
    <div>
        <input type="checkbox" ng-model="isck" ng-click="ckAll()" />全选 合计<span ng-bind="sumPrice()"></span> 总计<span ng-bind="count()"></span>
        <button class="button-dark">结算</button>
    </div>

</body>

</html>
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