This article mainly introduces AngularJS to implement the function of selecting all and inverting the selection in the shopping cart. Friends who need it can refer to it. I hope it can help everyone.
Without further ado, I will post the code directly for you. The specific code is as follows;
<!DOCTYPE html>
<html lang="en" ng-app="testMo">
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="css/bootstrap.css" rel="external nofollow" >
<style>
.p1{
margin: 20px;
}
</style>
</head>
<body>
<p ng-controller="testCtrl" class="p1">
<h4>angularJS--购物车实现全选/取消全选</h4>
<button type="button" class="btn btn-info" ng-click="addProduct()">添加商品</button>
<button type="button" class="btn btn-danger" ng-click="deleteProduct()">删除商品</button>
<br><br>
<table class="table table-bordered table-responsive" >
<thead>
<td>操作</td>
<td>check状态</td>
<td>商品名称</td>
<td>单价</td>
<td>数量</td>
<td>小计</td>
</thead>
<tr ng-repeat="p in cart" >
<td><input type="checkbox" ng-checked="p.checked" ng-click="echoChange(p.id,p.checked,selectAll)"></td>
<td>{{p.checked}}||{{p.checked}}</td>
<td>{{p.name}}</td>
<td>单价：￥{{p.price}}</td>
<td>数量：<input type="number" ng-model="p.count" min="0" value="p.count"></td>
<td>小计：￥{{p.sum}}</td>
</tr>
</table>
<br>
<input type="checkbox" ng-model="selectAll" ng-click="selectAllClick(selectAll)"><span ng-hide="selectAll" >全选</span><span ng-show="selectAll">取消全选</span>
<br><br>
已选择<span>{{jishuqi}}</span>件商品，总金额：<span>￥{{ sumTotal }}</span>
</p>
<script src="../js/angular.js"></script>
<script>
angular.module('testMo',['ng']).controller('testCtrl',function($scope){
// $scope.p1=new Object();
// $scope.p1.price=10;
// $scope.p1.count=1;
//购物车应该是一个数组
$scope.selectAll=false;//全选默认为false
$scope.cart=[{id:0,name:'商品0',price:10,count:5,sum:10,checked:false}];
$scope.addProduct= function (){
var p=new Object();
p.id=$scope.cart.length;
p.name='商品'+ p.id
p.price=Math.floor(Math.random()*100);//对数值向下取整
p.count=1;
p.sum= p.price* p.count;
p.checked=false;
$scope.cart.push({id: p.id,name: p.name,price:p.price,count: p.count,sum: p.sum,checked: p.checked});
console.log($scope.cart);
}
//删除商品
$scope.deleteProduct= function (){
$scope.cart.pop();//删除数组中的最后的一个元素，并且返回这个元素，会改变数组里的元素
}
//全选按钮check的点击事件
$scope.selectAllClick= function (sa) {
for(var i=0;i<$scope.cart.length;i++){
$scope.cart[i].checked=sa;
}
}
//单个数据的check事件
$scope.echoChange=function(id,ch,se){
$scope.cart[id].checked=!ch;
//当所有都选中时，全选也要被勾选
var cc=0;//计算当前数组中checked为真的数目
for(var i=0;i<$scope.cart.length;i++){
// if($scope.cart[i].checked==true){
// cc++;
// }
$scope.cart[i].checked?cc++:cc;
}
$scope.selectAll=(cc==$scope.cart.length);//当为真的数目=数组长度时，证明全部勾选
// console.log($scope.selectAll);
}
//监控数据
$scope.$watch('cart',function(newValue,oldValue,scope){
$scope.sumTotal=0; //总计
$scope.jishuqi=0; //计数器
for(var i in newValue) {
var sumN = newValue[i].count * newValue[i].price; //计算出新的结果
$scope.cart[i].sum = sumN.toFixed(2); //保留两位小数并且把它赋值给元数据;
if (newValue[i].checked) {
$scope.sumTotal += sumN;
$scope.jishuqi++;
// console.log($scope.sumTotal);
// console.log($scope.jishuqi);
}
}
},true);
/*$watch简介:在digest执行时，如果watch观察的的value与上一次执行时不一样时，就会被触发。
AngularJS内部的watch实现了页面随model的及时更新。
$watch方法在用的时候主要是手动的监听一个对象，但对象发生变化时触发某个事件。
$watch(watchFn,watchAction,deepWatch);
如果不加第三个参数，那么只会监听cart数组，只有当cart引用改变时才会触发,因此当需要监听一些引用对象时需要把第三个参数设置成true。
*/
});
</script>
</body>
</html>PS: Let me share with you the code of the angularjs shopping cart. The specific code is as follows Shown:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>购物车</title>
<script type="text/javascript" src="js/angular.js"></script>
</head>
<body ng-app="product" ng-controller="productController">
<center>
<h2>商品列表</h2>
<p class="container">
<!--导航栏-->
<nav>
<p >
<p id="bs-example-navbar-collapse-1">
<p>
<input type="text" ng-model="search" placeholder="产品名称">
产品价格:
<select>
<option>0-1000</option>
<option>1000-2000</option>
<option>2000-5000</option>
</select>
<input type="button" style="background:#FF0000" value="全部删除" ng-click="removeAll()">
</p>
</p>
</p>
</nav><br />
<table border="1 solid" cellpadding="10" cellspacing="0">
<thead>
<tr>
<th ng-click="sortProduct('id')">
产品编号
<span></span>
</th>
<th ng-click="sortProduct('name')">
产品名称
<span></span>
</th>
<th ng-click="sortProduct( 'price')">
产品价格
<span></span>
</th>
<th>
操作
<span></span>
</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in productList | filter:{ 'name':search} | orderBy:(orderSign+orderColumn) ">
<td>
{{item.id}}
</td>
<td>
{{item.name}}
</td>
<td>
{{item.price | currency:'(RMB)'}}
</td>
<td>
<input type="button" style="background:#FF0000" value="删除" ng-click="delProduct(item.name)">
</td>
</tr>
</tbody>
</table>
</p>
<script>
angular.module('product',[])
.factory('productList',function(){
return [
{ id:910,name:"imac",price:15400 },
{ id:80,name:"iphone",price:5400 },
{ id:29,name:"ipad",price:14200 },
{ id:500,name:"ipad air",price:23400 },
{ id:1200,name:"ipad mini",price:22000},
{ id:100,name:"android",price:9990 }
]
})
.controller('productController',function($scope,productList){
/*$scope.search = "ipad";//定义一个变量
alert($scope.search);*/
$scope.productList=productList
$scope.orderColumn='name'; //排序字段
$scope.orderSign='-'; //为空时正序 为负号时倒序
$scope.sortProduct=function(sortColumn){ //点击列标题排序事件
$scope.orderColumn=sortColumn;//觉得按照那一列进行排序
if($scope.orderSign=="-"){
$scope.orderSign="";
}else{
$scope.orderSign='-';
}
};
//删除产品
$scope.delProduct = function(name){
//alert(name);
if(name!=""){
if(confirm("是否删除"+name+"商品") ){
var p;
for (index in $scope.productList) {
p = $scope.productList[index];
if(p.name == name){
$scope.productList.splice(index,1);
}
}
}
}
}
//清空购物车
$scope.removeAll = function(){
if(confirm("你确定要清空购物车所有商品吗?")){
$scope.productList = [];
}
}
});
</script>
</center>
</body>
</html>Okay, the code ends here.
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