Promise async await的用法实例一枚

getlog2() {
    console.log("222");
  },
  getlog3() {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        console.log("333");
        resolve("as");
      }, 4000);
    });
  },
  getlog4() {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        console.log("444");
        resolve("as");
      }, 2000);
    });
  },
  async getAllData() {
    await this.getlog2();
    var tt= await this.getlog3();
    await this.getlog4();
    console.log("jiji");
    console.log("jiji");
  }