4. method

first

index.html

<!doctype html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Vue</title>
</head>
<body>
<div id="app">
    {{ `${firstName} ${lastName.toUpperCase()}` }}
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/3.4.6/vue.global.prod.min.js"></script>
<script src="app.js"></script>
</body>
</html>

app.js

const vm = Vue.createApp({
    data() {
        return {
            firstName: 'John',
            lastName: 'Doe',
        }
    }
}).mount('#app');

main.css

second

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Vue</title>
</head>
<body>
<div id="app">
    {{  fullName() }}
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/3.4.6/vue.global.prod.min.js"></script>
<script src="app.js"></script>
</body>
</html>

app.js

const vm = Vue.createApp({
    data() {
        return {
            firstName: 'John',
            lastName: 'Doe',
        }
    },
    methods: {
        fullName() {
            return `${this.firstName} ${this.lastName.toUpperCase()}`
        }
    }
}).mount('#app');

main.css

# 4. method

# first

# second

4. method

first

second