index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app">嘻嘻 {{baseInfo}} 哈哈</div>
    <script type="module">
      import Vue from './Vue.js'
      const app = new Vue({
        el: '#app',
        data: {
          name: '',
          age: 0,
          sex: '',
          stature: {
            weight: '',
            height: 0
          }
        },
        watch: {
          name(newVla, oldVal) {
            console.log('监听到name变化，由' + oldVal + '=>' + newVla)
          }
        },
        computed: {
          baseInfo() {
            return `我叫${this.name},${this.sex},今年${this.age}岁了。我的身高是${this.stature.weight}，体重是${this.stature.weight}`
          }
        },
        created() {
          this.name = '王章昊'
          this.age = 23
          this.sex = '男'
          this.stature.weight = '70kg'
          this.stature.height = '175cm'
          this.formatData()
          setTimeout(() => {
            this.name = '张艺菡'
            console.log(this.baseInfo)
          }, 2000)
        },
        methods: {
          formatData() {
            console.log(this.baseInfo)
          }
        }
      })
    </script>
  </body>
</html>