目录
效果预览图
完整代码
效果预览图
完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>购物车</title>
<style>
*{
margin: 0;
padding: 0;
}
table{
width: 700px;
border-collapse: collapse;
margin: 50px auto;
}
tr{
height: 50px;
}
th{
background: #eee;
}
td{
text-align: center;
}
</style>
</head>
<body>
<div id="app">
<table border="1">
<tr>
<th><input type="checkbox" v-model="qx" @change="aa" ></th>
<th>序号</th>
<th>书名</th>
<th>单价</th>
<th>数量</th>
<th>总价</th>
<th>操作</th>
</tr>
<tr v-for="(item,index) in arr">
<td><input type="checkbox" v-model="item.bol" @change="qx2"></td>
<td>{{index}}</td>
<td>{{arr[index].name}}</td>
<td>{{arr[index].dj}}</td>
<td><button @click="zj(index)">+</button>{{arr[index].num}}<button @click="js(index)">-</button></td>
<td>{{arr[index].dj*arr[index].num}}</td>
<td><button @click="sc(index)">删除</button></td>
</tr>
<tr>
<td>总价</td>
<td colspan="6">{{total}}</td>
</tr>
</table>
</div>
</body>
</html>
<script type="module">
import {createApp} from './js/vue.esm-browser.js';
createApp({
data() {
return {
arr:[
{name:'我在精神病院学斩神',dj:'39',num:1, bol:true},
{name:'诛仙',dj:'59',num:1, bol:true},
{name:'剑来',dj:'39',num:1, bol:true},
{name:'雪中悍刀行',dj:'49',num:1, bol:true},
{name:'大奉打更人',dj:'59',num:1, bol:true},
{name:'完美世界',dj:'49',num:1, bol:true},
{name:'仙逆',dj:'29',num:1, bol:true},
],
qx:true,
}
},
methods: {
zj(index){
this.arr[index].num+=1
},
js(index){
this.arr[index].num-=1
if (this.arr[index].num<1) {
this.arr[index].num=1
alert('每件商品最少要买一件')
}
},
sc(index){
this.arr.splice(index,1)
this.qx2()
},
qx2(){
let n = 0
this.arr.forEach((item,index)=>{
if (item.bol) {
n+=1;
}
})
if (n == this.arr.length) {
this.qx = true;
}else if (n != this.arr.length){
this.qx = false
console.log(this.qx);
}
},
aa(){
if (this.qx==false) {
this.arr.forEach((item,index)=>{
item.bol = false
})
}
}
},
computed:{
total(){
let t = 0;
this.arr.forEach((item,index)=>{
if(item.bol){
t += item.num*item.dj;
}
});
return t;
},
},
watch:{
qx(newVal,oldVal){
if (newVal) {
this.arr.forEach((item,index)=>{
item.bol = true
})
}
}
}
}).mount('#app')
</script>
