<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<h2>{{firstName + ' ' + lastName}}</h2>
<h2>{{firstName}} {{lastName}}</h2>
<h2>{{getFullName()}}</h2>
<h2>{{fullName}}</h2>
</div>
<script src="../js/vue.js"></script>
<script>
const app = new Vue({
el: '#app',
data: {
firstName: 'Tom',
lastName: 'Jerry'
},
// computed：计算属性（）
computed: {
fullName: function () {
return this.firstName + " " + this.lastName
}
},
methods: {
getFullName(){
return this.firstName + ' ' + this.lastName
}
}
})
</script>
</body>
</html>
