form3.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
		<script src="https://unpkg.com/vue@next"></script>
	</head>
	<body>
		<div id="app">
			<input type="radio" id="runoob" value="Runoob" v-model="picked">
			<label for="runoob">Runoob</label>
			<br>
			<input type="radio" id="google" value="Google" v-model="picked">
			<label for="google">Google</label>
			<br>
			<span>选中值为: {{ picked }}</span>
		</div>

		<script>
			const app = {
				data() {
					return {
						picked: 'Runoob'
					}
				}
			}

			Vue.createApp(app).mount('#app')
		</script>
	</body>
</html>