<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<!--<my-input type="价格" @input="val=>price=val" :value="price"></my-input>
<my-input type="数量" @input="val=>count=val" :value="count"></my-input>-->
<my-input type="价格" v-model="price"></my-input>
<my-input type="数量" v-model="count"></my-input>
<my-input type="折扣" v-model="discount"></my-input>
<p>运费：{{fre}}</p>
<p>总价:{{total}}</p>
</div>
<script type="text/javascript" src="js/vue.js" ></script>
<script>
Vue.component('my-input',{
template:"<div><label>{{type}}:</label> <input :value='value' @keyup='myInput'/></div>",
props:['type','value'],
data(){
return {
val:this.value
}
},
methods:{
myInput(ev){
this.val=ev.target.value;
//将this.val传递给父组件
this.$emit('input',this.val);//触发父组件中定义的对应事件执行
}
}
});
var vm=new Vue({
el:"#app",
data:{
price:50,
count:1,
discount:1
},
computed:{
total(){
return this.price*this.count*this.discount+this.fre;
},
fre(){
if(this.price*this.count*this.discount>=500){
return 0;
}else{
return 20;
}
}
}
})
</script>
</body>
</html>
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