世界上最伟大的投资就是投资自己的教育

零基础学习 Vue3 教程 2021 年最新教程免费视频教程 #04 Vue.js 基础 - 其他鼠标事件

下载随风 · 元婴发布于2021-01-20167 次点击

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://unpkg.com/vue@3.0.2"></script>
  <title>Learning Vue</title>
  <style>
    .box {
      padding: 100px 0;
      width: 300px;
      text-align: center;
      background: #ddd;
      margin: 20px;
      display: inline-block;
    }
  </style>
</head>
<body>
  <h1>Hello, Vue :)</h1>
  <div id="app">
    <div v-if="show">
      <h2>{{ title }} - {{ author }} - {{ age }} </h2>
    </div>

    <button v-on:click="age++">Increase age</button>
    <button v-on:click="age--">Decrease age</button>

    <button @click="toggleShow">
      <span v-if='show'>hide</span>
      <span v-else>show</span>
      <!-- <span v-if='!show'>show</span> -->
    </button>

    <div v-show="show">currently showing</div>

    <div @click="title = 'something else'">change title</div>
    <div @click="changeTitle('hello')">change title</div>

    <br>
    <!-- mouse events -->
    <div class="box" @mouseover="handleEvent($event, {name: 'hello'})">mouseover (enter)</div>
    <div class="box" @mouseleave='handleEvent'>mouseleave</div>
    <div class="box" @dblclick='handleEvent'>double click</div>
    <div class="box" @mousemove='handleMousemove'>position {{ x }} {{ y }}</div>
  </div>
  <script src="app.js"></script>
</body>
</html>

const app = Vue.createApp({
  // template: '<h2>I am the template</h2>'
  data() {
    return {
      show: false,
      title: 'I am the ',
      author: 'qiuzhi99',
      age: 30,
      x: 0,
      y: 0
    }
  },
  methods: {
    changeTitle(title) {
      this.title = title
    },
    toggleShow() {
      this.show = !this.show;
    },
    handleEvent(e, data) {
      console.log(e, e.type)
      if (data) {
        console.log(data)
      }
    },
    handleMousemove(e) {
      this.x = e.offsetX;
      this.y = e.offsetY;
    }
  }
});

app.mount('#app');