Vue: 生命周期

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>

<body>
  <div id="app">
    <h1>{{title}}</h1>
    <button @click="title = 'changed'">Update title</button>
    <button @click="destory">Destory</button>
  </div>
  <script>
    new Vue({
      el: '#app',
      data: {
        title: 'Vuejs instance'
      },
      methods: {
        destory: function() {
          this.$destory();
        }
      },
      // 初始化的时候调用，调用顺序为：beforeCreate-> created-> beforeMount -> mounted
      beforeCreate: function() {
        console.log('before created called');
      },
      created: function() {
        console.log('created called');
      },
      beforeMount: function() {
        console.log('beforeMount called');
      },
      mounted: function() {
        console.log('mounted called');
      },
      // beforeUpdate/updated data更新的时候调用，如果数据不更新，则不调用
      beforeUpdate: function() {
        console.log('beforUpdate called');
      },
      updated: function() {
        console.log('updated called');
      },
      // destory调用以后，所有的data不再受vuejs控制，意思是destory以后所有的方法都不再有用，移除了所有的js逻辑
      beforeDestory: function() {
        console.log('befor destory called');
      },
      destoryed: function() {
        console.log('destoryed called');
      }
    });
  </script>
</body>

</html>
猜你喜欢
