watch: {
      healthData: {
        deep: true, // 深度监听
        immediate: true, // true的话，不管数据是否有变化，进来就会运行
        handler: function(newVal, oldVal){
          this.form = newVal;
        }
      },
      containerPortList: {
        deep: true,
        handler: function(newVal){
          // 访问方式端口数据变化的相关操作
          if(!this.form.port) return;
          if(!newVal.includes(this.form.port)) {
            this.$set(this.form,'port', null);
          }
        }
      },
       // 监听对象里的某一项
      'form.command'(newVal) {
        if(newVal) {
          this.$set(this.form, 'commandList', [newVal]);
        }
      }
    },