[AppleScript] 纯文本查看 复制代码
<div id="app">
<div class="container">
<my-cart></my-cart>
</div>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
var CartTitle = {
props: ['uname'],
template: `
<div class="title">{{uname}}的商品</div>
`
}
# 3.2 把列表数据动态渲染到页面上
var CartList = {
props: ['list'],
template: `
<div>
<div :key='item.id' v-for='item in list' class="item">
<img :src="item.img"/>
<div class="name">{{item.name}}</div>
<div class="change">
<a href="">－</a>
<input type="text" class="num" />
<a href="">＋</a>
</div>
# 3.3 给按钮添加点击事件把需要删除的id传递过来
<div class="del" @click='del(item.id)'>×</div>
</div>
</div>
`,
methods: {
del: function(id){
# 3.4 子组件中不推荐操作父组件的数据有可能多个子组件使用父组件的数据
# 我们需要把数据传递给父组件 让父组件操作数据
this.$emit('cart-del', id);
}
}
}
var CartTotal = {
props: ['list'],
template: `
<div class="total">
<span>总价：{{total}}</span>
<button>结算</button>
</div>
`,
computed: {
total: function() {
// 计算商品的总价
var t = 0;
this.list.forEach(item => {
t += item.price * item.num;
});
return t;
}
}
}
Vue.component('my-cart',{
data: function() {
return {
uname: '张三',
list: [{
id: 1,
name: 'TCL彩电',
price: 1000,
num: 1,
img: 'img/a.jpg'
},{
id: 2,
name: '机顶盒',
price: 1000,
num: 1,
img: 'img/b.jpg'
},{
id: 3,
name: '海尔冰箱',
price: 1000,
num: 1,
img: 'img/c.jpg'
},{
id: 4,
name: '小米手机',
price: 1000,
num: 1,
img: 'img/d.jpg'
},{
id: 5,
name: 'PPTV电视',
price: 1000,
num: 2,
img: 'img/e.jpg'
}]
}
},
[AppleScript] 纯文本查看 复制代码
# 3.1 从父组件把商品列表list 数据传递过来 即 父向子组件传值 template: `
<div class='cart'>
<cart-title :uname='uname'></cart-title>
# 3.5 父组件通过事件绑定 接收子组件传递过来的数据
<cart-list :list='list' @cart-del='delCart($event)'></cart-list>
<cart-total :list='list'></cart-total>
</div>
`,
components: {
'cart-title': CartTitle,
'cart-list': CartList,
'cart-total': CartTotal
},
methods: {
# 3.6 根据id删除list中对应的数据
delCart: function(id) {
// 1、找到id所对应数据的索引
var index = this.list.findIndex(item=>{
return item.id == id;
});
// 2、根据索引删除对应数据
this.list.splice(index, 1);
}
}
});
var vm = new Vue({
el: '#app',
data: {
}
});
</script>
</body>
</html>