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AngularJS购物车功能增加/删除/价格的计算

2017-10-24 16:24 465 查看 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>AngularJS购物车功能增加/删除/价格的计算</title>
<script type="text/javascript" src="AngularJS/angular.js" ></script>
<script>
var app = angular.module("myApp",[]);
app.controller("myCtrl",function($scope){
$scope.shops = [{
name:"qq1",
price:12.9,
num:3,
state:false
},{
name:"wx1",
price:22,
num:5,
state:false
},{
name:"qq2",
price:33,
num:6,
state:false
},{
name:"wx2",
price:44,
num:4,
state:false
}];

//增加
$scope.add = function(index){
$scope.shops[index].num += 1;
}
//减少
$scope.reduce = function(index){
if($scope.shops[index].num>1){
$scope.shops[index].num -= 1;
}else{
if(window.confirm("要删除"+$scope.shops[index].name+"吗？")){
$scope.shops.splice(index,1);
}else{

}
}
}

//获取总价
$scope.allPrice = function(){
var all = 0;
for(index in $scope.shops){
all += $scope.shops[index].price * $scope.shops[index].num;
}
return all;
}

//全选
$scope.selectAll = false;
$scope.selectAllFun = function(){
if($scope.selectAll){
for(index in $scope.shops){
$scope.shops[index].state = true;
}
}else{
for(index in $scope.shops){
$scope.shops[index].state = false;
}
}
}

//反选
$scope.checkSelectAll = function(){
var flag = false;
for(index in $scope.shops){
if($scope.shops[index].state){

}else{
flag = true;
}
}
//至少有一个没有被选中
if(flag){
$scope.selectAll = false;
}else{
$scope.selectAll = true;
}
}

//批量删除
$scope.deleteSelected = function(){
var selectedShop = [];
for(index in $scope.shops){
if($scope.shops[index].state){
selectedShop.push($scope.shops[index].name);
}
}

if(selectedShop.length>0){
for(i1 in selectedShop){
for(i2 in $scope.shops){
if(selectedShop[i1] == $scope.shops[i2].name){
$scope.shops.splice(i2,1);
}
}
}
}else{
alert("请先选择")
}
}

//判断数据源的长度
$scope.getSize = function(){
if($scope.shops.length > 0 ){
return false;
}else{
return true;
}
}
});
</script>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<center>
<h3>我的购物车</h3>
<button ng-click="deleteSelected()">批量删除</button><br /><br />
<table ng-hide="getSize()" border="1 solid blue" cellpadding="10" cellspacing="0">
<thead>
<tr>
<th><input type="checkbox" ng-model="selectAll" ng-click="selectAllFun()"/></th>
<th>name</th>
<th>price</th>
<th>number</th>
<th>totalPrice</th>
<th>option</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="shop in shops">
<td><input type="checkbox" ng-model="shop.state" ng-click="checkSelectAll()"/></td>
<td>{{shop.name}}</td>
<td>{{shop.price| currency:"￥"}}</td>
<td>
<button ng-click="reduce($index)">-</button>
<input type="number" ng-model="shop.num" style="width: 30px;"/>
<button ng-click="add($index)">+</button>
</td>
<td>{{shop.price* shop.num| currency:"￥"}}</td>
<td><button>删除</button> </td>
</tr>
<tr>
<td colspan="6">总价为：<span ng-bind="allPrice() | currency:'￥'"></span></td>
</tr>
</tbody>
</table>

<span ng-show="getSize()">您的购物车为空，请先逛<a href="#">购物车</a></span>
</center>
</body>
</html>
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