父组件:

created() {
    let res =   new Promise((resolve) => {
      setTimeout(() => {
       
        resolve('treeDome 运行');
      }, 6000);
    });
    console.log(res)
  },

子组件:

created() { 
  console.log("子组件created执行")
  }

发现打印执行顺序,并不对,子组件先打印,父组件后打印

进行改造(进行如下改造,执行顺序也并没有按照期望的那样,先打印父组件再打印子组件):
父组件:

async created() {
    let res =  await new Promise((resolve) => {
      setTimeout(() => {
       
        resolve('treeDome 运行');
      }, 6000);
    });
    console.log(res)
  },

子组件:

async created() { 
  console.log("子组件created执行")
  }