入门/03计算属性.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
	<script src="vue.js"></script>
</head>
<body>
	<div id="app">
		<input type="text" v-model.number="a">
		{{a}}--->{{b}}
	</div>
	<script>
		new Vue({
			el: "#app",
			data: {
				a: ''
			},
			computed:{
				b:function(){
					return this.a + 1
				}
			}
		})
	</script>
</body>
</html>