async/await用法

demo1

  this.fun1()

  async fun1() {
    try {
      let time1 = await this.time1()
      console.log(time1)
    } catch (err) {
      console.log(err)
    }
  },

  time1() {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        console.log(1)
        resolve("p1 成功")
        // reject("p1 失败")
      }, 1000)
    })
  },