Vue实现购物车功能
效果图:
代码如下:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.0.2/css/bootstrap.min.css" rel="external nofollow" /> </head> <body> <div id="app" class="container"> <table class="table"> <thead> <tr> <th>产品编号</th> <th>产品名字</th> <th>购买数量</th> <th>产品单价</th> <th>产品总价</th> <th>操作</th> </tr> </thead> <tbody> <tr v-for="(item , index) in message"> <td @click="jia(index)">{{item.id}}</td> <td>{{item.name}}</td> <td> <button type="button" class="btn tn-primary" @click="subtract(index)">-</button> <input type="text" v-model="item.quantity"> <button type="button" class="btn tn-primary" @click="add(index)">+</button> </td> <td>{{item.price | filtermoney}}</td> <!--<td>{{arr[index].one}}</td>--> <td>{{item.price*item.quantity | filtermoney}}</td> <td> <button type="button" class="btn btn-danger" @click="remove(index)">移除</button> </td> </tr> <tr> <td>总购买价 </td> <td> {{animatenum | filtermoney}} </td> <td>总购买数量 </td> <td> </td> <td colspan="2"> <button type="button" class="btn btn-danger" @click="empty()">清空购物车</button> </td> </tr> </tbody> </table> <p v-if="message.length===0">您的购物车为空</p> </div> <script src="https://unpkg.com/tween.js@16.3.4"></script> <script src="https://cdn.bootcss.com/vue/2.2.3/vue.min.js"></script> <script> var vm=new Vue({ el:"#app", data:{ totalPrice:0, animatenum:0, message:[ { id: 007, name: 'iphone5s', quantity: 3, price: 4000 },{ id: 1340, name: 'iphone5', quantity: 9, price: 3000 },{ id: 7758, name: 'imac', quantity: 4, price: 7000 },{ id: 2017, name: 'ipad', quantity: 5, price: 6000 } ] }, watch:{ toComput2:function(newValue,oldValue){ this.tween(newValue,oldValue); } }, computed:{ //计算总金额 toComput2:function(){ var vm=this; //每次进来要重置总金额 vm.totalPrice=0; this.message.forEach(function(mess){ vm.totalPrice+=parseInt(mess.price*mess.quantity); }) return this.totalPrice; } }, filters:{ filtermoney:function(value){ return '¥'+value ; } }, mounted:function(){ this.tween('97000','0'); }, methods:{ //计算总数的方法为什么写在methods里面就不行? toComput:function(){ var vm=this; vm.message.forEach(function(mess){ vm.totalPrice+=parseInt(mess.price*mess.quantity); }) return vm.totalPrice; }, add:function(index){ var vm=this; vm.message[index].quantity++; }, subtract:function(index){ var vm=this; vm.message[index].quantity--; if(vm.message[index].quantity<=0){ if (confirm("你确定移除该商品?")) { vm.message.splice(index,1) } } }, remove:function(index){ var vm=this; if (confirm("你确定移除该商品?")) { vm.message.splice(index,1) } }, empty:function(){ var vm=this; vm.message.splice(0,vm.message.length); }, jia:function(index){ var vm=this; vm.arr[index].one++; }, tween:function(newValue,oldValue){ var vm=this; var twen=new TWEEN.Tween({animatenum:oldValue}); function animate() { requestAnimationFrame(animate); TWEEN.update(); }; twen.to({animatenum:newValue},750); twen.onUpdate(function(){ //toFixed();保留几位小数 vm.animatenum = this.animatenum.toFixed(); }) twen.start(); animate(); } } }); </script> </body> </html>
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