vue成就购物城的功能 （展示增删改查）
<!DOCTYPE html>
<html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="js/vue.js"></script>
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="css/bootstrap4.min.css"/>
</head>
<body>
<div id="app">
<input type="text" placeholder="请输入商品名称" class="form-control" style="width: 300px;margin: 20px;" v-model="word">
<table class="table">
<tr>
<th>选择</th>
<th>序号</th>
<th>商品图片</th>
<th>商品名称</th>
<th>商品单价</th>
<th>商品小计</th>
<th>购买数量</th>
<th>操作</th>
</tr>
<tr v-for="(v,k) in res">
<th><input type="checkbox" v-model="v.is_check"></th>
<th>{{k+1}}</th>
<th><img :src="v.goods_img" alt="无法识别" width="100" height="100"></th>
<th>{{v.goods_name}}</th>
<th>{{v.goods_price.toFixed(2)}}</th>
<th>{{v.goods_sum.toFixed(2)}}</th>
<th>
<button type="button" class="btn btn-primary" @click="jian(k)">-</button>
{{v.goods_num}}
<button type="button" class="btn btn-primary" @click="jia(k)">+</button>
</th>
<th>
<button type="button" class="btn btn-danger" @click="del(k)">删除</button>
</th>
</tr>
</table>
<p>
您当前选中<label style="color: red;font-size: 20px;font-weight: bold;">{{count}}</label>件商品，
总价为：￥<label style="color: red;font-size: 20px;font-weight: bold;">{{priceSum}}</label>
</p>
<button type="button" class="btn btn-primary" @click="fun1()">全选</button>
<button type="button" class="btn btn-primary" @click="fun2()">全不选</button>
<button type="button" class="btn btn-primary" @click="fun3()">反选</button>
<button type="button" class="btn btn-danger" @click="fun4()">批量删除</button>
</div>
</body>
</html>
<script>
new Vue({
el:"#app",
data:{
word:'',
list:[
{
goods_name:'李白-凤求凰',//名称
goods_img:'https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=182292951,1294008673&fm=26&gp=0.jpg',//图片
goods_price:1688,//单价
goods_num:1,//购买数量
goods_sum:1688,//小计
is_check:false
},
{
goods_name:'镜-炽热神光',//名称
goods_img:'https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1257477182,1700333640&fm=11&gp=0.jpg',//图片
goods_price:1688,//单价
goods_num:1,//购买数量
goods_sum:1688,//小计
is_check:false
},
{
goods_name:'露娜-紫霞仙子',//名称
goods_img:'https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=162561561,435847683&fm=26&gp=0.jpg',//图片
goods_price:888,//单价
goods_num:1,//购买数量
goods_sum:888,//小计
is_check:false
},
{
goods_name:'孙悟空-地狱火',//名称
goods_img:'https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2932847835,1578465715&fm=26&gp=0.jpg',//图片
goods_price:1688,//单价
goods_num:1,//购买数量
goods_sum:1688,//小计
is_check:false
},
{
goods_name:'貂蝉-异域舞娘',//名称
goods_img:'https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=381785760,2363478747&fm=15&gp=0.jpg',//图片
goods_price:288,//单价
goods_num:1,//购买数量
goods_sum:288,//小计
is_check:false
}
]
},
methods:{
jia(index){
var obj = this.list[index]
obj.goods_num++
obj.goods_sum = obj.goods_num*obj.goods_price
},
jian(index){
var obj = this.list[index]
obj.goods_num = obj.goods_num-1 <= 1 ? 1 : obj.goods_num-1
obj.goods_sum = obj.goods_num*obj.goods_price
},
del(index){
if(confirm('确定要删除吗？')){
this.list.splice(index,1)
}
},
fun1(){
this.list.map(function(v,k){
v['is_check'] = true
})
},
fun2(){
this.list.map(function(v,k){
v['is_check'] = false
})
},
fun3(){
this.list.map(function(v,k){
if(v['is_check']){
v['is_check'] = false
}else{
v['is_check'] = true
}
})
},
fun4(){
if(confirm('确定要删除所选内容吗？')){
//把不删除的拿出来
var arr = []
this.list.map(function(v,k){
if(v['is_check']==false){
arr.push(v)
}
})
this.list = arr
}
}
},
computed:{
res(){
var word = this.word
if(word==''){
return this.list
}else{
var arr = []
this.list.map(function(v,k){
if(v.goods_name.indexOf(word)>-1){
arr.push(v)
}
})
return arr;
}
},
count(){
var i=0
this.list.map(function(v,k){
if(v['is_check']){
i+=1
}
})
return i;
},
priceSum(){
var i=0;
this.list.map(function(v,k){
if(v['is_check']){
// console.log();
i += v['goods_sum']
}
})
return i.toFixed(2);
}
}
})
</script>
