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Vue.js Basics

Vue.js

Last updated at 2021-07-23Posted at 2021-07-22

index.html

   <section id="user-goal">
      <h2>My Course Goal</h2>
      <p>{{ courseGaol }}</p>
      <p>Learn more <a v-bind:href="vueLink">about Vue</a>.</p>
   </section>

app.js

const app = Vue.createApp({
    data() {
        return{
            courseGoalA: 'Finish the course and learn Vue!',
            courseGoalB: 'Master Vue and build amazing apps!',
            vueLink: 'https://v3.ja.vuejs.org/'
        };
    },
    methods: {
        outputGoal() {
            const ramdamNumber = Math.random();
            if (random < 0.5) {
                return this.courseGoalA;
            } else {
                return this.courseGoalB;
            }
        }
    }
});

app.mount('#user-goal');

sectionIdをapp.mount('')に入れる
＃を忘れない！

returnの中にVueで管理するデータを書く

関数はmethodsの中に書く

htmlに書くときは{{}}の中に書く
urlの場合はv-bindを使う

metheds内でdataの値を使うときはthisをつける

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Vue Basics</title>
    <link
      href="https://fonts.googleapis.com/css2?family=Jost:wght@400;700&display=swap"
      rel="stylesheet"
    />
    <link rel="stylesheet" href="styles.css" />
    <script src="https://unpkg.com/vue@next" defer></script>
    <script src="app.js" defer></script>
  </head>
  <body>
    <header>
      <h1>Vue Course Goals</h1>
    </header>
    <section id="user-goal">
      <h2>My Course Goal</h2>
      <p>{{ courseGaol }}</p>
      <p>Learn more <a v-bind:href="vueLink">about Vue</a>.</p>
    </section>
  </body>
</html>

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