Vue3 计算属性

计算属性关键词: computed。
计算属性在处理一些复杂逻辑时是很有用的

<!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" />
    <script src="https://unpkg.com/vue@next"></script>
    <title>Document</title>
  </head>
  <body>
    <div id="app">
      <h1>orginal str: {{str}}</h1>
      <h1>reverse str: {{reverseStr}}</h1>
    </div>

    <script>
      const app = Vue.createApp({
        data() {
          return {
            str: 'Hello',
          }
        },
        computed: {
          reverseStr() {
            return this.str.split('').reverse().join('')
          },
        },
      })
      app.mount('#app')
    </script>
  </body>
</html>

image

posted @ 2022-04-28 15:21  wjxuriel  阅读(269)  评论(0)    收藏  举报