<!DOCTYPE html>
<html>
	<head>
		<meta charset = "utf-8">
		<script type="text/javascript" src = "lib/angular.js"></script>
		<style type="text/css">
		   .item{
		   	 	height: 200px;
		   	 	width:100px;
		   	 	margin:5px;
		   	 	border:1px solid #ccc;
		   	 	float:left;
		   }
		</style>
	</head>
	<body ng-app = "mapp" ng-controller = "mctrl">
		<div class = "list">
			<div class = "item" ng-repeat = "item in items">
				<p class = "item-name"><span>商品名:</span>{{item.name}}</p>
				<p class = "item-price"><span>价格:</span>{{item.price|currency:"￥"}}</p>
				<input type = "button" ng-click = "buy($index)" value = "购买">
			</div>
		</div>
		<div class = "item-car">
			<p ng-repeat = "item in items">
				<span>{{item.name}}&nbsp&nbsp&nbsp&nbsp<span>
				<span>{{item.price|currency:"单价"}}&nbsp&nbsp&nbsp</span>
				<input type = "button" value = "-" ng-click = "minus($index)"/>
				<input type = "text" ng-model = "varlist.itemNum[$index]">
				<input type = "button" value = "+" ng-click = "add($index)"/>
				<span>单件总价:{{item.price*varlist.itemNum[$index]|currency:"￥"}}</span>
			</p>
			<p>总价：{{varlist.total|number:2}}</p>
		</div>
		<script type="text/javascript">
			var app = angular.module("mapp", []);
			app.controller("mctrl", function($scope) {
				// 数据源
			    $scope.items = [{
			        "name": "王老吉",
			        "price": 4
			    }, {
			        "name": "老干妈",
			        "price": 7.5
			    }, {
			        "name": "臭豆腐",
			        "price": 7.32
			    }, {
			        "name": "饼干",
			        "price": 22
			    }, ];
			    var len = $scope.items.length;
			    var arr = [];
			    // 循环为数组赋值
			    for (var i = 0; i < len; i++) {
			        arr[i] = 0;
			    }
			    // 检测是否变化，为了总价能够改变
			    $scope.$watch("varlist.itemNum", function() {
			        getTotal();
			    }, true);
			    // 定义变量
			    $scope.varlist = {
			        itemNum: arr,
			        total: 0
			    }
			    // 购物的时候操作
			    $scope.buy = function($index) {
			        $scope.varlist.itemNum[$index]++;
			        getTotal();
			    }
			    // -----
			    $scope.minus = function($index) {
			        if ($scope.varlist.itemNum[$index] == 0) {
			            return;
			        } else {
			            $scope.varlist.itemNum[$index]--;
			            getTotal();
			        }
			    }
			    // ++++
			    $scope.add = function($index) {
			        $scope.varlist.itemNum[$index]++;
			        getTotal();
			    }
			    // 计算总价
			    var getTotal = function($index) {
			        $scope.varlist.total = 0;
			        for (var j = 0; j < len; j++) {
			            $scope.varlist.total = $scope.varlist.total + $scope.varlist.itemNum[j] * $scope.items[j].price;
			        }
			        return $scope.varlist.total;
			    }
			});
		</script>
	</body>
</html>

2015-01-19   10:54:27  linJS