<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <!-- div中的title属性绑定了data的msg，v-bind，以v-开头的就成为指令，其绑定属性与实例保持一致 -->
    <div id="hyy">
        <compomenta :label='message' placeholder="test" def="message"></compomenta>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
    <script>
       Vue.component("compomenta",{
    props: ['label'],
    template:'<div><input v-bind:value="label" def="haha"><p>{{label}}</p></div>',
})

var test = new Vue({
    el: "#hyy",
    data: { //
    stime:"",//开始时间
    message:"label222",
    test:"lllll"
    },
})
    </script>
</body>

</html>