AngularJS 实现购物车全选反选功能
时间:2021-07-10 09:31:01|栏目:AngularJS|点击: 次
废话不多说了,直接给大家贴代码了,具体代码如下所示;
<!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> .div1{ margin: 20px; } </style> </head> <body> <div ng-controller="testCtrl" class="div1"> <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> </div> <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。 $watch(watchFn,watchAction,deepWatch); 如果不加第三个参数,那么只会监听cart数组,只有当cart引用改变时才会触发,因此当需要监听一些引用对象时需要把第三个参数设置成true。 */ }); </script> </body> </html>
PS:下面给大家分享angularjs 购物车的代码,具体代码如下所示:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>购物车</title> <script type="text/javascript" src="js/angular.js"></script> </head> <body ng-app="product" ng-controller="productController"> <center> <h2>商品列表</h2> <div class="container"> <!--导航栏--> <nav> <div > <div id="bs-example-navbar-collapse-1"> <div> <input type="text" ng-model="search" placeholder="产品名称"> 产品价格: <select> <option>0-1000</option> <option>1000-2000</option> <option>2000-5000</option> </select> <input type="button" style="background:#FF0000" value="全部删除" ng-click="removeAll()"> </div> </div> </div> </nav><br /> <table border="1 solid" cellpadding="10" cellspacing="0"> <thead> <tr> <th ng-click="sortProduct('id')"> 产品编号 <span></span> </th> <th ng-click="sortProduct('name')"> 产品名称 <span></span> </th> <th ng-click="sortProduct( 'price')"> 产品价格 <span></span> </th> <th> 操作 <span></span> </th> </tr> </thead> <tbody> <tr ng-repeat="item in productList | filter:{ 'name':search} | orderBy:(orderSign+orderColumn) "> <td> {{item.id}} </td> <td> {{item.name}} </td> <td> {{item.price | currency:'(RMB)'}} </td> <td> <input type="button" style="background:#FF0000" value="删除" ng-click="delProduct(item.name)"> </td> </tr> </tbody> </table> </div> <script> angular.module('product',[]) .factory('productList',function(){ return [ { id:910,name:"imac",price:15400 }, { id:80,name:"iphone",price:5400 }, { id:29,name:"ipad",price:14200 }, { id:500,name:"ipad air",price:23400 }, { id:1200,name:"ipad mini",price:22000}, { id:100,name:"android",price:9990 } ] }) .controller('productController',function($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>
好了,代码到此结束。
总结
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