console
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=, initial-scale=">
<meta http-equiv="X-UA-Compatible" content="">
<title>test</title>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
</head>
<body>
<div id="root">
<input type="text" v-model="val"/>
<input type="text" :value="val"/>
</div>
<script type="text/javascript">
new Vue({
el:"#root",
data:{
name:"cwz",
val:"8520"
}
})
</script>
</body>
</html>