<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src='./js/vue.js'></script>
<style type="text/css">
.container {
}
.container .cart {
width: 300px;
margin: auto;
}
.container .title {
background-color: lightblue;
height: 40px;
line-height: 40px;
text-align: center;
}
.container .total {
background-color: #FFCE46;
height: 50px;
line-height: 50px;
text-align: right;
}
.container .total button {
margin: 0 10px;
background-color: #DC4C40;
height: 35px;
width: 80px;
border: 0;
}
.container .total span {
color: red;
font-weight: bold;
}
.container .item {
height: 55px;
line-height: 55px;
position: relative;
border-top: 1px solid #ADD8E6;
}
.container .item img {
width: 45px;
height: 45px;
margin: 5px;
}
.container .item .name {
position: absolute;
width: 90px;
top: 0;left: 55px;
font-size: 16px;
}
.container .item .change {
width: 100px;
position: absolute;
top: 0;
right: 50px;
}
.container .item .change a {
font-size: 20px;
width: 30px;
text-decoration:none;
background-color: lightgray;
vertical-align: middle;
}
.container .item .change .num {
width: 40px;
height: 25px;
}
.container .item .del {
position: absolute;
top: 0;
right: 0px;
width: 40px;
text-align: center;
font-size: 40px;
cursor: pointer;
color: red;
}
.container .item .del:hover {
background-color: orange;
}
</style>
</head>
<body>
<section id="app">
<div class='container'>
<my-cart></my-cart>
</div>
</section>
<script type="text/javascript">
var cartTitle= {
props: ['uname'],
template: `
<div class='title'>
{{uname}}商品
</div>
`
}
var cartList= {
props: ['list'],
template: `
<div>
<div class="item" :key='item.id' v-for='item in list'>
<img :src='item.img'/>
<div class="name">{{ item.name }}</div>
<div class="change">
<a href="" v-on:click.prevent='sub(item.id)'>－</a>
<input type="text" class="num" :value='item.num' v-on:blur='changeNum(item.id, $event)'/>
<a href="" v-on:click.prevent='add(item.id)'>＋</a>
</div>
<div class="del" v-on:click='del(item.id)'>×</div>
</div>
</div>
`,
methods: {
del: function(id){
// 把id传递给父组件
this.$emit('cart-del', id);
},
changeNum: function(id, event){
this.$emit('change-num', {
id: id,
type: 'change',
num: event.target.value
});
// console.log(id, event.target.value);
},
sub: function(id){
this.$emit('change-num', {
id: id,
type: 'sub'
});
},
add: function(id){
this.$emit('change-num', {
id: id,
type: 'add'
});
}
}
}
var cartTotal= {
props: ['list'],
template: `
<div class='total'>
<span>总价：{{ total }}</span>
<button>结算</button>
</div>
`,
computed: {
total: function(){
// 计算商品的总价
var t= 0;
this.list.map(item=> {
t+= item.price* item.num;
});
return t;
}
}
}
Vue.component('my-cart', {
data: function(){
return {
uname: '马云的',
list: [{
id: 1,
name: 'TCL彩电',
price: 1000,
num: 1,
img: 'img/a.jpg'
},{
id: 2,
name: '机顶盒',
price: 1000,
num: 1,
img: 'img/b.jpg'
},{
id: 3,
name: '海尔冰箱',
price: 1000,
num: 1,
img: 'img/c.jpg'
},{
id: 4,
name: '小米手机',
price: 1200,
num: 1,
img: 'img/d.jpg'
},{
id: 5,
name: 'PPTV电视',
price: 1000,
num: 2,
img: 'img/e.jpg'
}]
}
},
template: `
<div class='cart'>
<cart-title :uname='uname'></cart-title>
<cart-list :list='list' v-on:cart-del='delCart($event)' v-on:change-num='changeNum($event)'></cart-list>
<cart-total :list='list'></cart-total>
</div>
`,
components: {
'cart-title': cartTitle,
'cart-list': cartList,
'cart-total': cartTotal,
},
methods: {
delCart: function(id){
// 根据id删除list中对应的数据
// 1、找到id所对应数据的索引
// 2、根据索引，删除对应数据
var index= this.list.findIndex(function(item){
return item.id == id;
});
this.list.splice(index, 1);
// this.list= this.list.filter(function(item){
// return item.id != id;
// })
},
changeNum: function(val){
// console.log(val);
// 根据子组件传过来的数据，更新list中对应的数据
this.list.some(function(item){
if(item.id== val.id && val.type== 'change'){
item.num= val.num;
// 终止遍历
return true;
}else if(item.id== val.id && val.type== 'sub'){
item.num> 0? item.num--: 0;
return true;
}else if(item.id== val.id && val.type== 'add'){
item.num< 99? item.num++: 99;
return true;
}
})
},
}
});
var vm = new Vue({
el: '#app',
data: {
}
});
</script>
</body>
</html>
